Example: Find Multiples Up To N (Using Function) in C

// Find Multiples Up To N (Using Function)
#include <stdio.h>

// Function to find and print multiples of a given number up to a limit
void findAndPrintMultiples(int num, int lim) {
    if (num <= 0 || lim <= 0) {
        printf("Error: Both the number and limit must be positive.\n");
        return;
    }
    if (num > lim) {
        printf("Error: The number (%d) cannot be greater than the limit (%d).\n", num, lim);
        return;
    }

    printf("Multiples of %d up to %d: ", num, lim);
    for (int i = num; i <= lim; i += num) {
        printf("%d ", i);
    }
    printf("\n");
}

int main() {
    // Step 1: Declare variables for the number and the limit
    int userNumber, userLimit;

    // Step 2: Prompt user for input
    printf("Enter the integer whose multiples you want to find: ");
    scanf("%d", &userNumber);

    printf("Enter the upper limit (N): ");
    scanf("%d", &userLimit);

    // Step 3: Call the function to find and print multiples
    findAndPrintMultiples(userNumber, userLimit);

    return 0;
}