交换两个变量值的三种写法

三少爷的鞋

于 2022-01-30 17:19:49 发布

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文章标签：排序算法算法

本文链接：https://blog.youkuaiyun.com/dhl_1986/article/details/122754226

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1，最经典的写法，使用temp 变量

    int a = 5;
    int b = 10;
    printf("a== %d,b == %d\n",a,b);
    
    int temp = a;
    a = b;
    b = temp;
    printf("a== %d,b == %d\n",a,b);

2,加减法

    int a = 5;
    int b = 10;
    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);

3,异或

    int a = 5;
    int b = 10;
    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);