使用函数实现两个数的交换

#include <stdio.h>
#include <stdlib.h>
void Swap(int* x, int* y){	//函数定义
	int tmp = *x;
	*x = *y;
	*y = tmp;
}
int main(){
	int num1 = 10;
	int num2 = 20;
	Swap(&num1,&num2);	//函数调用
	printf("num1 = %d,num2 = %d\n",num1,num2);
	system("pause");
	return 0;
}