Example: Find Multiples Up To N (Simple Loop) in C

// Find Multiples Up To N (Simple Loop)
#include <stdio.h>

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

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

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

    // Step 3: Input validation (optional but good practice)
    if (number <= 0 || limit <= 0) {
        printf("Please enter positive integers for both the number and the limit.\n");
        return 1; // Indicate an error
    }
    if (number > limit) {
        printf("The number must not be greater than the limit.\n");
        return 1; // Indicate an error
    }

    // Step 4: Display header
    printf("Multiples of %d up to %d: ", number, limit);

    // Step 5: Loop to find and print multiples
    for (i = number; i <= limit; i += number) {
        printf("%d ", i);
    }
    printf("\n"); // Newline for clean output

    return 0;
}