#include <iostream>
using namespace std;
// function declaration
void swap(int& x, int& y);
int main () {
// local variable declaration:
int a = 100;
int b = 200;
cout << "Before swap, value of a :" << a << endl;
cout << "Before swap, value of b :" << b << endl;
/* calling a function to swap the values.*/
swap(a, b);
cout << "After swap, value of a :" << a << endl;
cout << "After swap, value of b :" << b << endl;
return 0;
}
// function definition to swap the values.
void swap(int& x, int& y) {
int temp;
temp = x; /* save the value at address x */
x = y; /* put y into x */
y = temp; /* put x into y */
return;
}
原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/265487.html