How to use multiply two positive numbers in C Language

#include <stdio.h>
int main()
{
  int a, b, i;
  int result = 0;
  printf("Enter two Number to be Multiplied : ");
  scanf("%d%d", &a, &b);
  for (i = 1; i <= b; i++)
  {
      result = result + a;
  }
  printf("result  =   %d\n", result);
  return 0;
}

Enter two Number to be Multiplied : 4
3
result = 12