使用指针在函数中交换数值

Posted 2022-01-07 wanghao-boke

#include<stdio.h>

void swap(int* a,int *b)

    /*
    int temp = *a;
    *a = * b;
    *b = temp;
    */
    *a += *b;
    *b = *a - *b;
    *a = *a - *b; 
    


int main()

    int a = 10;
    int b = 20;
    swap(&a,&b);
    printf("a = %d,b = %d\n",a,b);