From 4ff0e42f65d8bba3d21bed53bfe1251d8db5c13f Mon Sep 17 00:00:00 2001
From: Carlos Maiolino <cem@toxiclabs.cc>
Date: Fri, 20 Feb 2026 16:17:14 +0100
Subject: extra code

---
 CPP/cpp_book/chap6/grades.cpp | 63 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 CPP/cpp_book/chap6/grades.cpp

(limited to 'CPP/cpp_book/chap6/grades.cpp')

diff --git a/CPP/cpp_book/chap6/grades.cpp b/CPP/cpp_book/chap6/grades.cpp
new file mode 100644
index 0000000..acbc1e0
--- /dev/null
+++ b/CPP/cpp_book/chap6/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;
+}
-- 
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