1 files changed, 28 insertions, 0 deletions
diff --git a/CPP/cpp_book/chap6/approval.cpp b/CPP/cpp_book/chap6/approval.cpp
new file mode 100644
index 0000000..c31c7b5
--- /dev/null
+++ b/CPP/cpp_book/chap6/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;
+}