Introduction_floatToString

#include <stdio.h>
#include <stdlib.h>

char* floatToBitString(int *p){
    int arret = 8 * sizeof(int);
    char* ms = malloc( arret * sizeof(char) + 1);
    int i = 0; int mask = 1;
    while(i < arret){
        ms[arret-i-1] = *p & mask == 1? '1' : '0';
        *p = *p>>1;
        i++;
    }

    ms[arret] = '\0';
    return ms;
}


int main (){
    float number;
    scanf("%f", &number);
    int *p;
    // p = malloc( 1 * sizeof(float) ); // 只需存1個float。
    *p = &number; // p 的 Address = number 的 address。
    printf("%s\n", floatToBitString(*p) );
}