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  Thanks

User · Answer

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 <stdio.h>

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.

User · Answer

x   float raw input  enter number between 0 and 1       p   0 while   2  p  x   1    0      p    1       print p      num   int  x    2    p         print num      result          if num    0          result    0      while num  gt  0          result   str num 2    result         num   num   2      for i in range  p - len result            result    0    result     result   result 0 -p          result -p    print result  this will print result for the decimal portion

User · Answer

d means decimal  b means binary    12 25d is your float  You write 12d in binary and remove it from your float  Only the remainder   25d  will be left  You write the dot  While the remainder  0 25d  is not zero  and or you want more digits   multiply it with 2  -  0 50d   remove and write the digit left of the dot  0   and continue with the new remainder   50d

User · Answer

Consider below example Convert 2 625 to binary  We will consider the integer and fractional part separately  The integral part is easy  2   10    For the fractional part  0 625      2     1 25    1   Generate 1 and continue with the rest  0 25       2     0 5     0   Generate 0 and continue  0 5        2     1 0     1   Generate 1 and nothing remains   So 0 625   0 101  and 2 625   10 101  See this link for more information

User · Answer

void transfer double x    unsigned long long  p    unsigned long long   amp x  for  int i   sizeof unsigned long long    8 - 1  i  gt   0  i--   cout lt  lt     p   gt  gt i  amp  1

User · Answer

Keep multiplying the number after decimal by 2 till it becomes 1 0   0 25 2   0 50 0 50 2   1 00   and the result is in reverse order being  01

[binary] How to convert float number to Binary?

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