使用函数交换两个数

#define _CRT_SECURE_NO_WARNINGS
#include"stdio.h"
#include <stdlib.h>
int swap(int *a, int *b)
{
 int temp;
 temp = *a;
 *a = *b;
 *b = temp;
}
main()
{
 int x, y;
 printf(“请输入x与y的值，用空格隔开\n”);
 scanf("%d %d", &x, &y);
 printf(“x=%d,y=%d\n”, x, y);
 swap(&x, &y);
 printf(“交换后\nx=%d,y=%d\n”, x, y);
 system(“pause”);
}