附c swap:

#include <stdio.h>

void swap(int x,int y);

void swapR(int &x,int &y);

int main() { int x = 10,y = 20;

printf("%s%d\t%s%d\n","being:  x=",x ,"y=",y);    swap(x,y);    printf("%s%d\t%s%d\n","swap:  x=",x ,"y=",y);    swapR(x,y);    printf("%s%d\t%s%d\n","swapR:  x=",x ,"y=",y); return 0;} void swap(int x , int y) { int temp=0;    temp = x;    x = y;    y = temp;} void swapR(int &x , int &y) { int temp=0;    temp = x;    x = y;    y = temp;}