移位

//测试移位
#include <stdio.h>
int main()
{
    //测试存储数据的方式：补码
    int a = -1;
    unsigned int b = 1U;
    printf("有符号数a的值是%x\n", a);
    printf("无符号数b的值是%x\n", b);

    //测试原码左移
    a = a << 3;
    b = b << 3;
    printf("有符号数a左移三位的值是%x\n", a);
    printf("有符号数a左移三位的值是%d\n", a);
    printf("无符号数b左移三位的值是%x\n", b);

    //测试负数补码左移
    a = a | 1;
    printf("有符号数a的值是%x\n", a);
    a = a << 29;
    printf("有符号数a左移29位的值是%x\n", a);

    //测试右移
    a = a << 2;
    b = 1;
    a = a >> 3;
    b = b >> 3;
    printf("有符号数a右移三位的值是%x\n", a);
    printf("有符号数a右移三位的值是%d\n", a);
    printf("无符号数b右移三位的值是%x\n", b);

    return 0;
}

 

转载于:https://www.cnblogs.com/zzdbullet/p/9493872.html