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### multiplication of two binary numbers in c language | CTechnotips

Rule of binary multiplication:

0 * 0 = 0
1 * 0 = 0
0 * 1 = 0
1 * 1 = 1

Q. what is the product of the binary numbers 0110 and 0011?

Answer: 0110 * 0011 = 10010

C code for product of two binary numbers
C program for multiplication of two binary numbers

#include
<stdio.h>

int main(){

long int binary1,binary2,multiply=0;

int digit,factor=1;

printf("Enter any first binary number: ");

scanf("%ld",&binary1);

printf("Enter any second binary number: ");

scanf("%ld",&binary2);

while(binary2!=0){

digit =  binary2 %10;

if(digit ==1){

binary1=binary1*factor;

}

else

binary1=binary1*factor;

binary2 = binary2/10;

factor = 10;

}

printf("Product of two binary numbers: %ld",multiply);

return 0;

}

int i=0,remainder = 0,sum[20];

int binarySum=0;

while(binary1!=0||binary2!=0){

sum[i++] =  (binary1 %10 + binary2 %10 + remainder ) % 2;

remainder = (binary1 %10 + binary2 %10 + remainder ) / 2;

binary1 = binary1/10;

binary2 = binary2/10;

}

if(remainder!=0)

sum[i++] = remainder;

--i;

while(i>=0)

binarySum = binarySum*10 + sum[i--];

return binarySum;

}

Sample output:

Enter any first binary number: 1101
Enter any second binary number: 11
Product of two binary numbers: 100111