demostruct.cpp

来自「压缩包里有教材<<C++模式设计-基于QT4开源跨平台开发框架&gt」· C++ 代码 · 共 35 行

#include <iostream>
#include "demostruct.h"

//start
void printFraction(Fraction f) { /* Passing a struct by value
    could be expensive if it has large components */
    cout << f.numer << "/" << f.denom << endl;
    cout << "  =? " << f.description << endl; 
}


int main() {
    
    Fraction f1;

    f1.numer = 4;
    f1.denom = 5;
    f1.description = "four fifths";
    
    Fraction f2 = {2, 3, "two thirds"}; /* Member
       Initialization */
    
    f1.numer = f1.numer + 2;
    printFraction(f1);
    printFraction(f2);
    return 0;
}
/*OUT
  6/5
  =? four fifths
  2/3  
  =? two thirds
*/