IEEE754 presenting

IEEE754

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

void printIEEE754(size_t const size, void const * const ptr){
    unsigned char *b = (unsigned char*) ptr;
    unsigned char byte;
    int i, j, c=0;

    if(size == 4){
        printf("%f\n", *(float*)ptr);
    }else if (size == 8){
        printf("%f\n", *(double*)ptr);
    }
    for (i = size-1; i >= 0; i--) {
        for (j = 7; j >= 0; j--) {
            byte = (b[i] >> j) & 1;
            printf("%u", byte);
            c++;
            if (c==1){
                printf(" ");
            }
            if (c==12 && size*8 == 64){
                printf(" ");
            }
            if (c==9 && size*8 == 32){
                printf(" ");
            }
        }
    }

    puts("\n");
}

int main(int argv, char* argc[])
{
    float f;

    f = 5.0;
    printIEEE754(sizeof(f), &f);

    f = -5.0808;
    printIEEE754(sizeof(f), &f);

    f = 0.085f;
    printIEEE754(sizeof(f), &f);

    f = 3.14f;
    printIEEE754(sizeof(f), &f);

    double d;
    d = 3.1415927;
    printIEEE754(sizeof(d), &d);
    return 0;
}