原码补码反码

#define _CRT_SECURE_NO_WARNINGS
#include <stdlib.h>
#include <stdio.h>
char stry[33] = { 0 };
char strf[33] = { 0 };
char strb[33] = { 0 };

void bcode(int num)
{
    unsigned int data = 1 << 31;//左移31位
    for (int i = 1; i <= 32; i++)
    {
        if (num&data)
        {
            strb[i - 1] = '1';
        }
        else
        {
            strb[i - 1] = '0';  
        }

        num <<= 1; 
    }
}

void ycode(int num)
{
    unsigned int data = 1 << 31;//左移31位

    if (num < 0)
    {
        num = ~num + 1;
        num = num | data;//确保符号位是1 后面都不变
    }

    for (int i = 1; i <= 32; i++)
    {
        if (num&data)
        {
            stry[i - 1] = '1';
        }
        else
        {
            stry[i - 1] = '0';
        }

        num <<= 1;
    }
}

void fcode(int num)
{
    unsigned int data = 1 << 31;//左移31位

    if (num < 0)
    {
        num = num - 1;
    }

    for (int i = 1; i <= 32; i++)
    {
        if (num&data)
        {
            strf[i - 1] = '1';
        }
        else
        {
            strf[i - 1] = '0';
        }

        num <<= 1;
    }
}

void main()
{
    int num;
    scanf("%d", &num);
    ycode(num);
    bcode(num);
    fcode(num);
    printf("原码:%s", stry);
    printf("
反码:%s", strf);
    printf("
补码:%s", strb);
    system("pause");
}