关于交换两数的数值，你知道几种方法？下面有最优解，进来看看是不是你想的那种

#define _CRT_SECURN_NO_WARNINGS 1
#include<stdio.h>
//int main()
//{
//int a=1, b=2,c;
//c = a;
//a = b;
//b = c;
//printf(“a=%d b=%d”, a, b);
//system(“pause”);
//return 0;
//}

//
//int main()
//{
// int a = 1, b = 2;
// a = a + b;
// b = a - b;
// a = a - b;
// printf(“a=%d b=%d”, a, b);
// system(“pause”);
// return 0;
//}

int main()
{
int a = 1, b = 2;
a = a ^ b;
b = a ^ b;
a = a ^ b;
printf(“a=%d b=%d”, a, b);
system(“pause”);
return 0;
}