multiplication of two numbers in c

1int num1,num2;
2printf("%d",num1+num2);

1int num1,num2;
2printf("%d",num1*num2);

1// Program to multiply 2 numbers from user inputs
2
3#include <stdio.h>
4int main() {
5    double a, b, product;
6    printf("Enter two numbers: ");
7    scanf("%lf %lf", &a, &b);  
8 
9    // Calculating product
10    product = a * b;
11
12    // Result up to 2 decimal point is displayed using %.2lf
13    printf("Product = %.2lf", product);
14    
15    return 0;
16}
17