fig3.15

fig3.15

GradeBook.h

#pragma once #include<string> class GradeBook { public: explicit GradeBook(std::string); void setCourseName(std::string); std::string getCourseName() const; void displayMessage() const; private: std::string courseName; };

GradeBook.cpp

#include<iostream> #include"GradeBook.h" using namespace std; GradeBook::GradeBook(string name) { setCourseName(name); } void GradeBook::setCourseName(string name) { if (name.size() <= 25) courseName = name; if (name.size() > 25) { courseName = name.substr(0, 25); cerr << "Name \"" << name << "\"exceeds maximum length (25).\n" << "Limiting courseName to first 25 characters.\n" << endl; } } string GradeBook::getCourseName() const { return courseName; } void GradeBook::displayMessage() const { cout << "Welcome to the grade book for\n" << getCourseName() << "!" << endl; }

fig03_17.cpp

#include<iostream> #include"GradeBook.h" using namespace std; int main() { GradeBook gradeBook1("CS101 Introduction to programming in c++"); GradeBook gradeBook2("CS102 C++ Data Structures"); cout << "gradeBook1's initial course name is: " << gradeBook1.getCourseName() << "\ngradeBook2's initial course name is: " << gradeBook2.getCourseName() << endl; gradeBook1.setCourseName("CS101 C++ programming"); cout << "\ngradeBook1's course name is: " << gradeBook1.getCourseName() << "\ngradeBook2's course name is: " << gradeBook2.getCourseName() << endl; system("pause"); return 0; }