7

C/C++ Program for Multiply two integers without using multiplication, division and bitwise operators, and no loops.

program solution

#include<stdio.h>

/* function to multiply two numbers x and y*/

int multiply(int x, int y)

{

   /* 0  multiplied with anything gives 0 */

   if(y == 0)

     return 0;

 

   /* Add x one by one */

   if(y > 0 )

     return (x + multiply(x, y-1));

  

  /* the case where y is negative */

   if(y < 0 )

     return -multiply(x, -y);

}

 

int main()

{

  printf("\n %d", multiply(5, -11));

  getchar();

  return 0;

}

Output

-55