Move CPP code here

Signed-off-by: Carlos Maiolino <[email protected]>

40 files changed, 812 insertions, 0 deletions

diff --git a/CPP/cpp_book/.1_1.cpp.un~ b/CPP/cpp_book/.1_1.cpp.un~
new file mode 100644
index 0000000..3400a2d
--- /dev/null
+++ b/CPP/cpp_book/.1_1.cpp.un~
diff --git a/CPP/cpp_book/.1_2.cpp.un~ b/CPP/cpp_book/.1_2.cpp.un~
new file mode 100644
index 0000000..3a1c9b3
--- /dev/null
+++ b/CPP/cpp_book/.1_2.cpp.un~
diff --git a/CPP/cpp_book/.exe.cpp.un~ b/CPP/cpp_book/.exe.cpp.un~
new file mode 100644
index 0000000..23003a7
--- /dev/null
+++ b/CPP/cpp_book/.exe.cpp.un~
diff --git a/CPP/cpp_book/.greeting.cpp.un~ b/CPP/cpp_book/.greeting.cpp.un~
new file mode 100644
index 0000000..7c476f3
--- /dev/null
+++ b/CPP/cpp_book/.greeting.cpp.un~
diff --git a/CPP/cpp_book/chap1/1_1 b/CPP/cpp_book/chap1/1_1
new file mode 100755
index 0000000..1d73f5e
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_1
diff --git a/CPP/cpp_book/chap1/1_1.cpp b/CPP/cpp_book/chap1/1_1.cpp
new file mode 100644
index 0000000..7a6cd2c
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_1.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <string>
+
+int
+main()
+{
+	std::cout << "Please enter your first name: ";
+
+	std::string name;
+	std::cin >> name;
+
+	std::cout << "Hello, " << name << ". Welcome!" << std::endl;
+
+	return 0;
+}
diff --git a/CPP/cpp_book/chap1/1_1.cpp~ b/CPP/cpp_book/chap1/1_1.cpp~
new file mode 100644
index 0000000..c7cc953
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_1.cpp~
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <string>
+
+int
+main()
+{
+	std::cout << "Please enter your first name: ";
+
+	std::string name;
+	std::in >> name;
+
+	std::cout << "Hello, " << name << ". Welcome!" << std::endl;
+
+	return 0;
+}
diff --git a/CPP/cpp_book/chap1/1_2 b/CPP/cpp_book/chap1/1_2
new file mode 100755
index 0000000..05ac539
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_2
diff --git a/CPP/cpp_book/chap1/1_2.cpp b/CPP/cpp_book/chap1/1_2.cpp
new file mode 100644
index 0000000..b914271
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_2.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <string>
+
+int
+main()
+{
+	std::cout << "Enter your first name: ";
+	std::string name;
+	std::cin >> name;
+
+	const std::string greeting = "Hello, " + name + "!";
+
+	const std::string spaces(greeting.size(), ' ');
+	const std::string second = "* " + spaces + " *";
+	const std::string first(second.size(), '*');
+
+	std::cout << msg << std::endl;
+
+	std::cout << std::endl;	// Flush stdou buffer
+
+	std::cout << first << std::endl;
+	std::cout << second << std::endl;
+	std::cout <<"* " + greeting + " *" << std::endl;
+	std::cout << second << std::endl;
+	std::cout << first << std::endl;
+}
diff --git a/CPP/cpp_book/chap1/1_2.cpp~ b/CPP/cpp_book/chap1/1_2.cpp~
new file mode 100644
index 0000000..9e42110
--- /dev/null
+++ b/CPP/cpp_book/chap1/1_2.cpp~
@@ -0,0 +1,29 @@
+#include <iostream>
+#include <string>
+
+int
+main()
+{
+	std::cout << "Enter your first name: ";
+	std::string name;
+	std::cin >> name;
+
+	const std::string greeting = "Hello, " + name + "!";
+
+	const std::string spaces(greeting.size(), ' ');
+	const std::string second = "* " + spaces + " *";
+	const std::string first(second.size(), '*');
+
+	const std::string exclam = "!";
+	const std::string msg = "Hello" + ", world" + exclam;
+
+	std::cout << msg << std::endl;
+
+	std::cout << std::endl;	// Flush stdou buffer
+
+	std::cout << first << std::endl;
+	std::cout << second << std::endl;
+	std::cout <<"* " + greeting + " *" << std::endl;
+	std::cout << second << std::endl;
+	std::cout << first << std::endl;
+}
diff --git a/CPP/cpp_book/chap1/exe.cpp b/CPP/cpp_book/chap1/exe.cpp
new file mode 100644
index 0000000..537d955
--- /dev/null
+++ b/CPP/cpp_book/chap1/exe.cpp
@@ -0,0 +1,23 @@
+#include <iostream>
+#include <string>
+
+int main(void) {
+
+	std::cout << "Whats us your name? ";
+	std::string name;
+
+	std::cin >> name;
+
+	std::cout << "Hello, " << name
+			      << std::endl
+			      << "And what is yours? ";
+
+	std::cin >> name;
+
+	std::cout << "Hello, "	<< name
+				<< "; nice to meet you too!"
+				<< std::endl;
+
+    
+	return 0;
+}
diff --git a/CPP/cpp_book/chap2/greeting.cpp b/CPP/cpp_book/chap2/greeting.cpp
new file mode 100644
index 0000000..516d36a
--- /dev/null
+++ b/CPP/cpp_book/chap2/greeting.cpp
@@ -0,0 +1,54 @@
+#include <iostream>
+#include <string>
+
+#define ROW_PAD 5
+#define COL_PAD	8
+
+int main(void)
+{
+	using std::cout;	using std::endl;
+	using std::cin;		using std::string;
+
+	const int rows = ROW_PAD * 2 + 3;	// empty + first/last line + greeting
+	string name;
+
+	cout << "Enter your name: ";
+	cin >> name;
+
+	const string greeting = "Hello " + name + "!";
+	const string::size_type cols = COL_PAD * 2 + greeting.size() + 2;
+
+	cout << endl;
+
+	/*
+	 * Loop invariant:
+	 * 	-We've written 'r' rows so far
+	 */
+	const string col_blank(COL_PAD, ' ');
+	const string row_blank(cols - 2, ' ');
+	for (int r = 0; r != rows; r++) {
+
+		string::size_type c = 0;
+		/*
+		 * Loop invariant:
+		 * 	- We've written 'c' columns so far
+		 */
+		while (c != cols) {
+			if (r == ROW_PAD + 1 && c == 1) {
+				cout << col_blank << greeting << col_blank;
+				c += greeting.size() + (col_blank.size() * 2);
+			} else {
+				if (r == 0 || r == rows - 1 ||
+				    c == 0 || c == cols - 1) {
+					cout << "*";
+					c++;
+				} else {
+					cout << row_blank;
+					c += row_blank.size();
+				}
+			}
+		}
+		cout << endl;
+	}
+	return 0;
+}
diff --git a/CPP/cpp_book/chap2/greeting.cpp~ b/CPP/cpp_book/chap2/greeting.cpp~
new file mode 100644
index 0000000..c2a3b8f
--- /dev/null
+++ b/CPP/cpp_book/chap2/greeting.cpp~
@@ -0,0 +1,54 @@
+#include <iostream>
+#include <string>
+
+#define ROW_PAD 5
+#define COL_PAD	8
+
+int main(void)
+{
+	using std::cout;	using std::endl;
+	using std::cin;		using std::string;
+
+	const int rows = ROW_PAD * 2 + 3;	// empty + first/last line + greeting
+	string name;
+
+	cout << "Enter your name: ";
+	cin >> name;
+
+	const string greeting = "Hello " + name + "!";
+	const string::size_type cols = COL_PAD * 2 + greeting.size() + 2;
+
+	cout << endl;
+
+	/*
+	 * Loop invariant:
+	 * 	-We've written 'r' rows so far
+	 */
+	const string col_blank(COL_PAD, ' ');
+	const string row_blank(cols - 2, ' ');
+	for (int r = 0; r != rows; r++) {
+
+		string::size_type c = 0;
+		/*
+		 * Loop invariant:
+		 * 	- We've written 'c' columns so far
+		 */
+		while (c != cols) {
+			if (r == ROW_PAD + 1 && c == 1) {
+				cout << col_blank << greeting << col_blank;
+				c += greeting.size() + (blank.size() * 2);
+			} else {
+				if (r == 0 || r == rows - 1 ||
+				    c == 0 || c == cols - 1) {
+					cout << "*";
+					c++;
+				} else {
+					cout << row_blank;
+					c += row_blank.size();
+				}
+			}
+		}
+		cout << endl;
+	}
+	return 0;
+}
diff --git a/CPP/cpp_book/chap3/.grades.cpp.un~ b/CPP/cpp_book/chap3/.grades.cpp.un~
new file mode 100644
index 0000000..4d93a46
--- /dev/null
+++ b/CPP/cpp_book/chap3/.grades.cpp.un~
diff --git a/CPP/cpp_book/chap3/grade.cpp b/CPP/cpp_book/chap3/grade.cpp
new file mode 100644
index 0000000..0a08217
--- /dev/null
+++ b/CPP/cpp_book/chap3/grade.cpp
@@ -0,0 +1,27 @@
+#include <vector>
+#include "student_info.h"
+#include "median.h"
+#include "grade.h"
+
+double grade(double midterm, double final, double homework)
+{
+	return (midterm * 0.2 +
+		final * 0.4 +
+		homework * 0.4);
+}
+
+/* Overloads above grade() */
+double grade(double midterm, double final, const std::vector<double>& hw)
+{
+	if (hw.size() == 0)
+		throw std::domain_error("Student has no homework");
+
+	return grade(midterm, final, median(hw));
+}
+
+double grade(const StudentInfo& s)
+{
+	return grade(s.midterm, s.final, s.homework);
+}
+
+
diff --git a/CPP/cpp_book/chap3/grade.h b/CPP/cpp_book/chap3/grade.h
new file mode 100644
index 0000000..7cd73d1
--- /dev/null
+++ b/CPP/cpp_book/chap3/grade.h
@@ -0,0 +1,11 @@
+#ifndef GRADE_H
+#define GRADE_H
+
+#include <vector>
+#include "student_info.h"
+
+double grade(double midterm, double final, double homework);
+double grade(double midterm, double final, const std::vector<double>& hw);
+double grade(const StudentInfo& s);
+
+#endif /* GRADE_H */
diff --git a/CPP/cpp_book/chap3/grades b/CPP/cpp_book/chap3/grades
new file mode 100755
index 0000000..f086657
--- /dev/null
+++ b/CPP/cpp_book/chap3/grades
diff --git a/CPP/cpp_book/chap3/grades.cpp b/CPP/cpp_book/chap3/grades.cpp
new file mode 100644
index 0000000..3c8f19a
--- /dev/null
+++ b/CPP/cpp_book/chap3/grades.cpp
@@ -0,0 +1,48 @@
+#include <iomanip>	// IO Manipulators
+#include <ios>
+#include <iostream>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <stdexcept>
+#include "grade.h"
+#include "student_info.h"
+
+using std::cin;		using std::string;
+using std::cout;	using std::endl;
+
+int
+main(void)
+{
+	std::vector<StudentInfo> students;
+	StudentInfo record;
+	string::size_type maxlen = 0;
+
+	while (read_student(cin, record)) {
+		maxlen = std::max(maxlen, record.name.size());
+		students.push_back(record);
+	}
+
+	sort(students.begin(), students.end(), compare_students);
+
+	for (std::vector<StudentInfo>::size_type i = 0;
+	     i != students.size();
+	     i++) {
+
+		cout << students[i].name
+		     << string(maxlen + 1 - students[i].name.size(), ' ');
+
+		try {
+			double final_grade = grade(students[i]);
+
+			std::streamsize prec = cout.precision();
+			cout << std::setprecision(3) << final_grade
+			     << std::setprecision(prec);
+		} catch (std::domain_error& e){
+			cout << e.what();
+		}
+
+		cout << endl;
+	}
+	return 0;
+}
diff --git a/CPP/cpp_book/chap3/median.cpp b/CPP/cpp_book/chap3/median.cpp
new file mode 100644
index 0000000..e9932e8
--- /dev/null
+++ b/CPP/cpp_book/chap3/median.cpp
@@ -0,0 +1,21 @@
+#include <vector>
+#include <algorithm>
+#include <stdexcept>
+
+double median(std::vector<double> vec)
+{
+	std::vector<double>::size_type mid, size;
+
+	size = vec.size();
+
+	if (size == 0)
+		throw std::domain_error("median of an empty vector");
+
+	sort(vec.begin(), vec.end());
+
+	mid = size / 2;
+
+	return size % 2 == 0 ? (vec[mid] + vec[mid - 1]) / 2
+			     : vec[mid];
+
+}
diff --git a/CPP/cpp_book/chap3/median.h b/CPP/cpp_book/chap3/median.h
new file mode 100644
index 0000000..f4e6580
--- /dev/null
+++ b/CPP/cpp_book/chap3/median.h
@@ -0,0 +1,8 @@
+#ifndef MEDIAN_H
+#define MEDIAN_H
+
+#include <vector>
+
+double median(std::vector<double> vec);
+
+#endif /* MEDIAN_H */
diff --git a/CPP/cpp_book/chap3/student_info.cpp b/CPP/cpp_book/chap3/student_info.cpp
new file mode 100644
index 0000000..a55338b
--- /dev/null
+++ b/CPP/cpp_book/chap3/student_info.cpp
@@ -0,0 +1,34 @@
+#include "student_info.h"
+
+bool compare_students(const StudentInfo& a, const StudentInfo& b)
+{
+	return a.name < b.name;
+}
+
+std::istream& read_homework(std::istream& in, std::vector<double>& hw)
+{
+	if (in) {
+		hw.clear();	// Empty the vector.
+
+		double x;
+		/*
+		 * Loop invariant:
+		 *	- 'homework' contains all the homework grades read so far
+		 */
+		while (in >> x)
+			hw.push_back(x);
+
+		in.clear();	// Clear the stream in case
+				// it will be used again.
+	}
+	return in;
+}
+
+std::istream& read_student(std::istream& is, StudentInfo& s)
+{
+	/* Read and store student's name, midterm and final */
+	is >> s.name >> s.midterm >> s.final;
+
+	read_homework(is, s.homework);
+	return is;
+}
diff --git a/CPP/cpp_book/chap3/student_info.h b/CPP/cpp_book/chap3/student_info.h
new file mode 100644
index 0000000..697f3c0
--- /dev/null
+++ b/CPP/cpp_book/chap3/student_info.h
@@ -0,0 +1,20 @@
+#ifndef STUDENT_INFO_H
+#define STUDENT_INFO_H
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+struct StudentInfo {
+	std::string name;
+	double midterm;
+	double final;
+	std::vector<double> homework;
+};
+
+
+bool compare_students(const StudentInfo& a, const StudentInfo& b);
+std::istream& read_homework(std::istream& in, std::vector<double>& hw);
+std::istream& read_student(std::istream& is, StudentInfo& s);
+
+#endif /* STUDENT_INFO_H */
diff --git a/CPP/cpp_book/chap3/tags b/CPP/cpp_book/chap3/tags
new file mode 100644
index 0000000..acf7309
--- /dev/null
+++ b/CPP/cpp_book/chap3/tags
@@ -0,0 +1,4 @@
+Mgrades.cpp	grades.cpp	/^main(void)$/
+grade	grades.cpp	/^double grade(double midterm, double final, double /
+median	grades.cpp	/^double median(std::vector<double> vec)$/
+read_homework	grades.cpp	/^istream& read_homework(istream& in, std::vector<do/
diff --git a/CPP/cpp_book/chap5/approval.cpp b/CPP/cpp_book/chap5/approval.cpp
new file mode 100644
index 0000000..c31c7b5
--- /dev/null
+++ b/CPP/cpp_book/chap5/approval.cpp
@@ -0,0 +1,28 @@
+#include <vector>
+#include <iostream>
+#include "student_info.h"
+#include "grade.h"
+#include "approval.h"
+
+bool fgrade(const StudentInfo& s) {
+	return grade(s) < 60;
+}
+
+std::list<StudentInfo>
+extract_fails(
+	std::list<StudentInfo>& students)
+{
+	std::list<StudentInfo> fail;
+	std::list<StudentInfo>::iterator iter = students.begin();
+
+	while (iter != students.end()) {
+		if (fgrade(*iter)) {
+			fail.push_back(*iter);
+			iter = students.erase(iter);
+		} else {
+			iter++;
+		}
+	}
+
+	return fail;
+}
diff --git a/CPP/cpp_book/chap5/approval.h b/CPP/cpp_book/chap5/approval.h
new file mode 100644
index 0000000..6db01e3
--- /dev/null
+++ b/CPP/cpp_book/chap5/approval.h
@@ -0,0 +1,10 @@
+#ifndef APPROVAL_H
+#define APPROVAL_H
+
+#include <list>
+#include "student_info.h"
+
+bool fgrade(const StudentInfo& s);
+std::list<StudentInfo> extract_fails(std::list<StudentInfo>& students);
+
+#endif /* APPROVAL_H */
diff --git a/CPP/cpp_book/chap5/grade.cpp b/CPP/cpp_book/chap5/grade.cpp
new file mode 100644
index 0000000..0a08217
--- /dev/null
+++ b/CPP/cpp_book/chap5/grade.cpp
@@ -0,0 +1,27 @@
+#include <vector>
+#include "student_info.h"
+#include "median.h"
+#include "grade.h"
+
+double grade(double midterm, double final, double homework)
+{
+	return (midterm * 0.2 +
+		final * 0.4 +
+		homework * 0.4);
+}
+
+/* Overloads above grade() */
+double grade(double midterm, double final, const std::vector<double>& hw)
+{
+	if (hw.size() == 0)
+		throw std::domain_error("Student has no homework");
+
+	return grade(midterm, final, median(hw));
+}
+
+double grade(const StudentInfo& s)
+{
+	return grade(s.midterm, s.final, s.homework);
+}
+
+
diff --git a/CPP/cpp_book/chap5/grade.h b/CPP/cpp_book/chap5/grade.h
new file mode 100644
index 0000000..7cd73d1
--- /dev/null
+++ b/CPP/cpp_book/chap5/grade.h
@@ -0,0 +1,11 @@
+#ifndef GRADE_H
+#define GRADE_H
+
+#include <vector>
+#include "student_info.h"
+
+double grade(double midterm, double final, double homework);
+double grade(double midterm, double final, const std::vector<double>& hw);
+double grade(const StudentInfo& s);
+
+#endif /* GRADE_H */
diff --git a/CPP/cpp_book/chap5/grades b/CPP/cpp_book/chap5/grades
new file mode 100755
index 0000000..638d2ff
--- /dev/null
+++ b/CPP/cpp_book/chap5/grades
diff --git a/CPP/cpp_book/chap5/grades.core b/CPP/cpp_book/chap5/grades.core
new file mode 100644
index 0000000..fc50544
--- /dev/null
+++ b/CPP/cpp_book/chap5/grades.core
diff --git a/CPP/cpp_book/chap5/grades.cpp b/CPP/cpp_book/chap5/grades.cpp
new file mode 100644
index 0000000..acbc1e0
--- /dev/null
+++ b/CPP/cpp_book/chap5/grades.cpp
@@ -0,0 +1,63 @@
+#include <iomanip>	// IO Manipulators
+#include <ios>
+#include <iostream>
+#include <string>
+#include <list>
+#include <algorithm>
+#include <stdexcept>
+#include "grade.h"
+#include "student_info.h"
+#include "approval.h"
+
+using std::cin;		using std::string;
+using std::cout;	using std::endl;
+
+int
+main(void)
+{
+	std::list<StudentInfo> students, fail;
+	StudentInfo record;
+	string::size_type maxlen = 0;
+
+	while (read_student(cin, record)) {
+		maxlen = std::max(maxlen, record.name.size());
+		students.push_back(record);
+	}
+
+	students.sort(compare_students);
+
+	for (std::list<StudentInfo>::iterator i = students.begin();
+	     i != students.end();
+	     i++) {
+
+		cout << i->name
+		     << string(maxlen + 1 - i->name.size(), ' ');
+
+		try {
+			double final_grade = grade(*i);
+
+			std::streamsize prec = cout.precision();
+			cout << std::setprecision(3) << final_grade
+			     << std::setprecision(prec);
+			cout << " - Student "
+			     << (fgrade(*i) ? "Failed" : "Approved");
+
+		} catch (std::domain_error& e){
+			cout << e.what();
+		}
+
+		cout << endl;
+	}
+
+	fail = extract_fails(students);
+
+	std::cout << "Failed students: " << std::endl;
+
+	for (std::list<StudentInfo>::iterator i = fail.begin();
+	     i != fail.end();
+	     i++) {
+		std::cout << i->name << std::endl;
+	}
+
+	return 0;
+}
diff --git a/CPP/cpp_book/chap5/median.cpp b/CPP/cpp_book/chap5/median.cpp
new file mode 100644
index 0000000..e9932e8
--- /dev/null
+++ b/CPP/cpp_book/chap5/median.cpp
@@ -0,0 +1,21 @@
+#include <vector>
+#include <algorithm>
+#include <stdexcept>
+
+double median(std::vector<double> vec)
+{
+	std::vector<double>::size_type mid, size;
+
+	size = vec.size();
+
+	if (size == 0)
+		throw std::domain_error("median of an empty vector");
+
+	sort(vec.begin(), vec.end());
+
+	mid = size / 2;
+
+	return size % 2 == 0 ? (vec[mid] + vec[mid - 1]) / 2
+			     : vec[mid];
+
+}
diff --git a/CPP/cpp_book/chap5/median.h b/CPP/cpp_book/chap5/median.h
new file mode 100644
index 0000000..f4e6580
--- /dev/null
+++ b/CPP/cpp_book/chap5/median.h
@@ -0,0 +1,8 @@
+#ifndef MEDIAN_H
+#define MEDIAN_H
+
+#include <vector>
+
+double median(std::vector<double> vec);
+
+#endif /* MEDIAN_H */
diff --git a/CPP/cpp_book/chap5/split_str/split_str b/CPP/cpp_book/chap5/split_str/split_str
new file mode 100755
index 0000000..06f91bd
--- /dev/null
+++ b/CPP/cpp_book/chap5/split_str/split_str
diff --git a/CPP/cpp_book/chap5/split_str/split_str.cpp b/CPP/cpp_book/chap5/split_str/split_str.cpp
new file mode 100644
index 0000000..3bb843e
--- /dev/null
+++ b/CPP/cpp_book/chap5/split_str/split_str.cpp
@@ -0,0 +1,147 @@
+#include <iostream>
+#include <vector>
+#include <cctype>
+
+std::vector<std::string>
+split(const std::string& s) {
+	std::vector<std::string> ret;
+	std::string::size_type i = 0;
+
+	/* Invariant: we have processed characters [start i, i) */
+	while (i != s.size()) {
+
+
+		/*
+		 * Walk to the first non-space character
+		 *
+		 * Invariant: characters between [start i, current i) are all
+		 * spaces
+		 */
+		while (i != s.size() && isspace(s[i]))
+			i++;
+
+		/*
+		 * Find the end of current word
+		 *
+		 * Invariant: None of the characters between [i, j) are spaces
+		 */
+		std::string::size_type j = i;
+		while (j != s.size() && !isspace(s[j]))
+			j++;
+
+		/* If we found non-whitespace chars, push to the vector */
+		if (i != j) {
+			ret.push_back(s.substr(i, j - i));
+			i = j;
+		}
+	}
+
+	return ret;
+}
+
+std::string::size_type
+width(const std::vector<std::string>& v)
+{
+	std::string::size_type ret = 0;
+
+	for (std::vector<std::string>::const_iterator i = v.begin();
+	     i != v.end();
+	     i++)
+		ret = std::max(ret, i->size());
+
+	return ret;
+}
+
+std::vector<std::string>
+frame(const std::vector<std::string>&v) {
+
+	std::vector<std::string> ret;
+	std::string::size_type w = width(v);
+	std::string border(w + 4, '*');
+
+	ret.push_back(border);
+
+	for (std::string::size_type i = 0;
+	     i != v.size();
+	     i++)
+		ret.push_back("* " + v[i] + std::string(w - v[i].size(), ' ') + " *");
+
+	ret.push_back(border);
+
+	return ret;
+}
+
+std::vector<std::string>
+vcat(
+	const std::vector<std::string>& v1,
+	const std::vector<std::string>& v2) {
+
+	std::vector<std::string> ret = v1;
+
+	for (std::vector<std::string>::const_iterator i = v2.begin();
+	     i < v2.end();
+	     i++)
+		ret.push_back(*i);
+
+	return ret;
+}
+
+std::vector<std::string>
+hcat(
+	const std::vector<std::string>& v1,
+	const std::vector<std::string>& v2) {
+
+	std::vector<std::string> ret;
+
+	std::string::size_type w1 = width(v1) + 1;
+
+
+	std::vector<std::string>::size_type i = 0, j = 0;
+
+	while (i != v1.size() || j != v2.size()) {
+		std::string s;
+
+		if (i != v1.size())
+			s = v1[i++];
+
+		s += std::string(w1 - s.size(), ' ');
+
+		if (j != v2.size())
+			s += v2[j++];
+
+		ret.push_back(s);
+	}
+
+	return ret;
+}
+
+int main(void) {
+
+	std::string s;
+	while (getline(std::cin, s)) {
+
+		std::vector<std::string> vec = split(s);
+
+		vec = frame(vec);
+		for (std::vector<std::string>::const_iterator i = vec.begin();
+		     i < vec.end();
+		     i++) {
+			std::cout << *i << std::endl;
+		}
+	}
+
+	std::string a = "Vai curintia fela da puta";
+	std::vector<std::string> v1 = split(a);
+	v1 = frame(v1);
+	std::string b = "Curintiano sao tudo paus do caralho porra locas";
+	std::vector<std::string> v2 = split(b);
+
+	std::vector<std::string> v3 = hcat(v1, v2);
+	for (std::vector<std::string>::const_iterator i = v3.begin();
+	     i < v3.end();
+	     i++) {
+		std::cout << *i << std::endl;
+	}
+
+	return 0;
+}
diff --git a/CPP/cpp_book/chap5/split_str/text.txt b/CPP/cpp_book/chap5/split_str/text.txt
new file mode 100644
index 0000000..a6436ff
--- /dev/null
+++ b/CPP/cpp_book/chap5/split_str/text.txt
@@ -0,0 +1 @@
+seu corno puto manso
diff --git a/CPP/cpp_book/chap5/student_info.cpp b/CPP/cpp_book/chap5/student_info.cpp
new file mode 100644
index 0000000..a55338b
--- /dev/null
+++ b/CPP/cpp_book/chap5/student_info.cpp
@@ -0,0 +1,34 @@
+#include "student_info.h"
+
+bool compare_students(const StudentInfo& a, const StudentInfo& b)
+{
+	return a.name < b.name;
+}
+
+std::istream& read_homework(std::istream& in, std::vector<double>& hw)
+{
+	if (in) {
+		hw.clear();	// Empty the vector.
+
+		double x;
+		/*
+		 * Loop invariant:
+		 *	- 'homework' contains all the homework grades read so far
+		 */
+		while (in >> x)
+			hw.push_back(x);
+
+		in.clear();	// Clear the stream in case
+				// it will be used again.
+	}
+	return in;
+}
+
+std::istream& read_student(std::istream& is, StudentInfo& s)
+{
+	/* Read and store student's name, midterm and final */
+	is >> s.name >> s.midterm >> s.final;
+
+	read_homework(is, s.homework);
+	return is;
+}
diff --git a/CPP/cpp_book/chap5/student_info.h b/CPP/cpp_book/chap5/student_info.h
new file mode 100644
index 0000000..697f3c0
--- /dev/null
+++ b/CPP/cpp_book/chap5/student_info.h
@@ -0,0 +1,20 @@
+#ifndef STUDENT_INFO_H
+#define STUDENT_INFO_H
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+struct StudentInfo {
+	std::string name;
+	double midterm;
+	double final;
+	std::vector<double> homework;
+};
+
+
+bool compare_students(const StudentInfo& a, const StudentInfo& b);
+std::istream& read_homework(std::istream& in, std::vector<double>& hw);
+std::istream& read_student(std::istream& is, StudentInfo& s);
+
+#endif /* STUDENT_INFO_H */
diff --git a/CPP/cpp_book/test.cpp b/CPP/cpp_book/test.cpp
new file mode 100644
index 0000000..28186d3
--- /dev/null
+++ b/CPP/cpp_book/test.cpp
@@ -0,0 +1,39 @@
+#include <iostream>
+#include <string>
+
+struct name {
+	std::string name;
+	int num[5];
+};
+
+int main(void) {
+
+	int x;
+	int i = 0;
+	struct name foo;
+	struct name bar;
+	std::cin >> foo.name;
+	while (std::cin >> x) {
+		foo.num[i] = x;
+		i++;
+
+		if (i >= 5)
+			break;
+	}
+	i = 0;
+
+	if (std::cin)
+		std::cout << "We have data" << std::endl;
+	std::cin.clear();
+	std::cin >> bar.name;
+	while (std::cin >> x) {
+		bar.num[i] = x;
+		i++;
+
+		if (i >= 5)
+			break;
+	}
+
+	std::cout << foo.name.size() << " " << bar.name.size() << std::endl;
+	return 0;
+}
diff --git a/CPP/cpp_book/test2 b/CPP/cpp_book/test2
new file mode 100755
index 0000000..65e91b3
--- /dev/null
+++ b/CPP/cpp_book/test2
diff --git a/CPP/cpp_book/test2.cpp b/CPP/cpp_book/test2.cpp
new file mode 100644
index 0000000..54ae462
--- /dev/null
+++ b/CPP/cpp_book/test2.cpp
@@ -0,0 +1,14 @@
+#include <iostream>
+#include <string>
+
+int main(void) {
+
+	std::string name;
+	int a, b, c;
+	while (std::cin >> name) {
+		std::cin >> a >> b;
+		std::cout << name << a << b << std::endl;
+	}
+
+	return 0;
+}