Define class public interface of the class. - C++ Class

C++ examples for Class:Class Creation

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Description

Define class public interface of the class.

Demo Code

                  
#include <string>
                  // ww w.  j a  va2s .  co  m
class Course {
 private:
    std::string courseName;
                  
 public:
    Course(std::string);
                  
    // SETTERS
    void setCourseName(std::string);
                  
    // GETTERS
    std::string getCourseName();
                  
    void displayMessage();
};
#include <iostream>
                  
Course::Course(std::string name) { setCourseName(name); }
// SETTERS
// ensure coursename does not exceed 25 chars
void Course::setCourseName(std::string name) {
    if (name.length() <= 25) courseName = name;
                  
    if (name.length() > 25) {
        courseName = name.substr(0, 25);
                  
        std::cout << "Name \"" << name << "\" exceeds maximum length (25).\n";
        std::cout << "Limiting courseName to first 25 characters.\n" << std::endl;
    }
}
// GETTERS
std::string Course::getCourseName() { 
   return courseName; 
}
// display a welcome message to the Course user
void Course::displayMessage() {
    std::cout << "Welcome to the grade book for\n" << getCourseName() << "!" << std::endl;
}
                  
int main(int argc, const char *argv[]) {
    Course gradeBook1("C++");
    Course gradeBook2("Java");
                  
    std::cout << "gradeBook1 initial course name: " << gradeBook1.getCourseName();
    std::cout << "\ngradeBook2 initial course name: " << gradeBook2.getCourseName() << std::endl;
                  
    // modify myCourse's courseName (with a valid length string)
    gradeBook1.setCourseName("Python");
                  
    // display each Course's courseName
    std::cout << "\ngradeBook1 course name: " << gradeBook1.getCourseName();
    std::cout << "\ngradeBook2 course name: " << gradeBook2.getCourseName() << std::endl;
    return 0;
}

Result


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