方法1:算術運算:
a = a + b;
b = a - b;
a = a - b;方法2:位運算:
a ^= b;
b ^= a;
a ^= b;
#include<stdio.h>
int main()
{
int a = 10;
int b = 23;
a = a + b;
b = a - b;
a = a - b;
printf("%d, %d\n", a, b);
a ^= b;
b ^= a;
a ^= b;
printf("%d, %d\n", a, b);
}
運行結果: