C - OddEven/ProductSum

#include <stdio.h>

int main()
{
    int i, num1, num2, sum = 0, product = 1;

    printf("Enter the first number:  ");
    scanf("%d", &num1);
    printf("Enter the second number: ");
    scanf("%d", &num2);

    for(i < num1 + 1; i <= num2; i++){
        if(i % 2 == 0){
            sum = sum + i;
        }
        if(i % 2 != 0){
            product = product * i;
        }
    }
    printf("\n");
    printf("Sum of even numbers: %d\n", sum);
    printf("Product of odd numbers: %d", product);

    return 0;
}