Question

C语言：如何不通过中间变量交换两个数的值

如何不通过中间变量交换两个数的值

Answer 1

#include <stdio.h>
int main()
{
int a = 1;
int b = 2;
printf("a=%d,b=%d\n",a,b);
a = a+b;
b = a-b;
a = a-b;
printf("a=%d,b=%d\n",a,b);
return 1;
}

Answer 2

int a=10,b=20;a=a|b;b=b|a;a=a|b;

Answer 3

X=X+Y;Y=X-Y;X=X-Y;