数据转换-位串字节数组

#include <stdio.h>
#include <string.h>
#include "utils.h"


char Hex2Char(int i){

    if(i>=0 && i<= 9)
        return i + 0x30;
       // return i + '0'
    if(i>=10 && i<=15)
        return i + 0x37;
       //return  i + 'A' - 10;

}
int Char2Hex(char x){
        if(x>48&&x<58)
        return x-48;
        if(x>65&&x<75)
        return x - 55;
}
void B2Arr(char bs[],char ba[])

{
printf("1");
int b1,b2,b3,b4,b5,i;
        for(i = 0;i<strlen(bs);i+4)
        {b1 = Char2Hex(bs[i]);
        b2 = Char2Hex(bs[i + 1]);
        b3 = Char2Hex(bs[i+2]);
        b4 = Char2Hex(bs[i + 3]);
        b5 = b1*8 + b2*4 + b3*2 + b4*1;
        ba[i/4] = Hex2Char(b5);
        }
        printf("%s转化为%s\n",bs,ba);
        return 0;
}

void ByteArr2Bitstr(char ba[],char bs[])
{
int b1,b2,b3,b4,b5,i;
for (i = 0;i<strlen(ba);i++)

{b5 = Char2Hex(ba[i]);
b1 = b5/8;
b2 = (b5-b1*8)/4;
b3 = (b5-b1*8 -b2*4)/2;
b4 = b5%2;
bs[i*4] = Hex2Char(b1);
bs[i*4+1] = Hex2Char(b2);
bs[i*4+2] = Hex2Char(b3);
bs[i*4+3] = Hex2Char(b4);
}
printf("%s转化为%s\n",ba,bs);

}

#include <stdio.h>
#include "utils.h"
void main(){
char ba1[] = "1316";
char bs1[] = "1100110000110100";
char bs2[100];
char ba2[100];
ByteArr2Bitstr(ba1,bs2);
}

标签：字节,位串,char,b5,b1,数组,bs,include,Hex2Char
来源： https://www.cnblogs.com/abcd123123123/p/14766002.html