1 files changed, 34 insertions, 0 deletions
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;
+}