编辑代码

#include <stdio.h>
int main () {
   int x = 6,y = 99;
    swap(&x,&y);
    printf("\nx=%d\ty=%d",x,y);
}  

void swap(int* num1,int* num2){
    int temp = *num1;
    *num1 = *num2;
    *num2 = temp;
}