I need a program in C, where I can do subtraction of BINARY numbers, for example

Question

I need a program in C, where I can do subtraction of BINARY numbers, for example "11-10 = 01".
And how can I join this program(Addition binary) with the subtraction program? (NO C ++, and not C ++ libraries, only in C language, please).

#include <stdio.h>
#include <math.h>

int main() {
    int bin1, bin2;
    int temp1, temp2;
    int max, min, carry = 0, sum = 0,mid, po=1;

    printf("Enter binary number 1:");
    scanf("%d", &bin1);
    printf("Enter binary number 2:");
    scanf("%d", &bin2);

    if(bin1>bin2)
    {
        max = bin1;
        min = bin2;
    }
    else
    {
        max = bin2;
        min = bin1;
    }
    while(max>0)
    {
        temp1 = max%10;
        max = max/10;

        temp2 = min%10;
        min = min/10;

        mid = (temp1 + temp2 + carry)%2;
        carry = (temp1 + temp2 + carry)/2;

        sum = po*mid + sum;
        po = po*10;
        if ( max == 0 && carry >0)
        {
            sum = po*carry + sum;
        }

    }
    printf("Binary addition = %d", sum);
    return 0;
}

Explanation / Answer

/* here I have modified your code where it will perform subtraction & addition

*/

#include <stdio.h>

#include <math.h>

int main() {

int bin1, bin2;

int temp1, temp2;

//2 variables borrow & diff are added & reutilising mid variable

int max, min, carry = 0, sum = 0,mid, po=1, borrow=0, diff=0;

printf("Enter binary number 1:");

scanf("%d", &bin1);

printf("Enter binary number 2:");

scanf("%d", &bin2);

if(bin1>bin2)

{

max = bin1;

min = bin2;

}

else

{

max = bin2;

min = bin1;

}

while(max>0)

{

temp1 = max%10;

max = max/10;

temp2 = min%10;

min = min/10;

mid = (temp1 + temp2 + carry)%2;

carry = (temp1 + temp2 + carry)/2;

sum = po*mid + sum;

//subtraction code starts here

mid = (temp1 - temp2 - borrow)%2; // find difference

borrow = (temp1 - temp2 - borrow)/2; //find borrow

diff = po*mid + diff; //difference value as per binay value

po = po*10;

if ( max == 0 && carry >0)

{

sum = po*carry + sum;

}

//if there is borrow remainded then add to final diff value

if ( max == 0 && borrow >0)

{

diff = po*borrow + diff;

}

}

printf("Binary addition = %d ", sum);

//print final subtracted value

printf(" Binary subtraction = %d", diff);

return 0;

}

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