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;
}