本帖最后由 devcang 于 2012-10-25 13:22 编辑

//
//http://www.amobbs.com/forum.php?mod=viewthread&tid=5503119&extra=page%3D1%26filter%3Dauthor%26orderby%3Ddateline%26orderby%3Ddateline
//

#include <stdio.h>
#define u8 unsigned char
#define uint unsigned int

uint Bin2Str(u8 num, char * str){
    //u8 str[8];

    str[0] = ((num & 0x80) >> 7) + '0';
    str[1] = ((num & 0x40) >> 6) + '0';
    str[2] = ((num & 0x20) >> 5) + '0';
    str[3] = ((num & 0x10) >> 4) + '0';
    str[4] = ((num & 0x08) >> 3) + '0';
    str[5] = ((num & 0x04) >> 2) + '0';
    str[6] = ((num & 0x02) >> 1) + '0';
    str[7] = (num & 0x01) + '0';
        str[8] = 0;
    return 8;   
}

uint Float2Str(float num, char * str){//<=65.535
    uint temp;
    //u8 str[8];
    temp = (unsigned int)(num*1000);
    str[7] = '';
    str[6] = ' ';   
    str[5] = temp%10 + '0';
    str[4] = temp/10%10 + '0';
    str[3] = temp/100%10 + '0';
    str[2] = '.';
    str[1] = temp/1000%10 + '0';
    str[0] = temp/10000%10 + '0';
    return 8;   
}

int main(void){
        char t0[8], t1[8];
        uint r = Bin2Str(123, t0);
        printf(" Bin2Str() = %s ", t0);
       
        r = Float2Str(65.535, t1);
        printf(" Float2Str() = %s ", t1);
        return 0;
}