C++ Exercises: Multiply two integers without using multiplication, division, bitwise operators, and loops

C++ Math: Exercise-17 with Solution

Write a C++ program to multiply two integers without using multiplication, division, bitwise operators, and loops.

Sample Input: 8, 9
Sample Output: 72

Sample Input: -11, 19
Sample Output: -209

Sample Solution:

C++ Code :

#include <iostream>
  
using namespace std; 
int multiply_two_nums(int x, int y) 
{ 
    if(y == 0) 
    return 0; 
  
    if(y > 0 ) 
    return (x + multiply_two_nums(x, y-1 )); 
  
    if(y < 0 ) 
    return - multiply_two_nums(x, -y); 
}

int main() 
{ 
    cout << multiply_two_nums(8, 9) << endl; 
    cout << multiply_two_nums(-11, 19) << endl ;
    return 0; 
} 

Sample Output:

72
-209

Flowchart:

C++ Code Editor:

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