#include <stdio.h>

void printSum(int a, int b) {
    int sum = a + b;
    printf("The sum of %d and %d is: %d\n", a, b, sum);
}

void printProduct(int a, int b) {
    int product = a * b;
    printf("The product of %d and %d is: %d\n", a, b, product);
}

int main() {
    int num1 = 5;
    int num2 = 3;
    int i = 0;

    // For loop
    printf("For loop:\n");
    for (i = 0; i < 5; i++) {
        printf("%d\n", i);
    }

    // While loop
    printf("\nWhile loop:\n");
    while (num2 > 0) {
        printf("%d\n", num2);
        num2--;
    }

    // Function calls
    printf("\nFunction calls:\n");
    printSum(num1, num2);
    printProduct(num1, num2);

    return 0;
}