How to convert float number to Binary?

Question

Can anyone please tell me how can I convert this float number: 12.25 to binary? I know how to convert the \"12\" but not the 0.25

Any help is much appreciated. Thank

Answer 1

The float value is stored in IEEE 754 format so we can't convert it directly like integer, char to binary.

But we can convert float to binary through a pointer.

#include 

int main()
{
    float a = 7.5;
    int i;
    int * p;

    p = &a;
    for (i = sizeof(int) * 8 - 1; i >= 0; i--)
    {   
        printf("%d", (*p) >> i & 1); 
    }   

    return 0;
}

Output

0 10000001 11100000000000000000000

Spaces added for clarification, they are not included as part of the program.