8ビットの並びを逆転して遊ぶ その2

いろいろ、注意

• UNOでの予定は、未定

プログラム

オンラインコンパイラ　paiza

#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    
    long a,b;
    
    a = 0b11110000;
    //a = 0b10000000;
    //a = 0b01000000;
    //a = 0b00100000;
    //a = 0b00010000;
    //a = 0b00001000;
    //a = 0b00000100;
    //a = 0b00000010;
    //a = 0b00000001;

    //printf("[%02x]\n",a);

    a = a << 7;
    b = 0b10000000 &  a;

    //printf("[%x]\n",b);
    
    a = a >> 2;
    b = b | (0b01000000 &  a);

    a = a >> 2;
    b = b | (0b00100000 &  a);
    
    a = a >> 2;
    b = b | (0b00010000 &  a);
    
    a = a >> 2;
    b = b | (0b00001000 &  a);
    
    a = a >> 2;
    b = b | (0b00000100 &  a);
    
    a = a >> 2;
    b = b | (0b00000010 &  a);
    
    a = a >> 2;
    b = b | (0b00000001 &  a);

    printf("[%02x]\n",b);

}

[0f]

おまけ

12345678901234567890
============12345678
            87654321
     87654321        <<7 =(1)
       87654321      >>2 =(2)
         87654321    >>2 =(3) 
           87654321  >>2 =(4)
            ********
             87654321       >>2 =(5)
               87654321     >>2 =(6)
                 87654321   >>2 =(7)
                   87654321 >>2 =(8)