写两个函数，交换两个整型变量值

#define _CRT_SECURE_NO_WARNINGS 1

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

void Swap(int*pa , int* pb)

{

 int z =0;

 z = *pa;

 *pa = *pb;

 *pb = z;

}

int main()

{

int a = 10;

int b = 20;

printf("交换前：a = %d b = %d\n",a,b);

Swap(&a,&b);//交换两个函数

printf("交换后：a = %d b = %d\n",a,b);

 return 0;

}