使用指针在函数中交换数值

#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);}