C PROGRAMMING PROGRAM • LOOPS & NUMBER PROBLEMS

Print All Factors of a Number

Learn how to print all factors of a number using a clear C program.

BeginnerFactorsModulusLoop

PROBLEM UNDERSTANDING

Input and expected output

Sample input

Sample output

Factors: 1 2 3 4 6 8 12 24

COMPLETE C PROGRAM

Complete C implementation

#include <stdio.h>

int main(void)
{
    int number;

    printf("Enter a positive integer: ");
    scanf("%d", &number);
    if (number <= 0) {
        printf("Use a positive integer.\n");
        return 0;
    }
    printf("Factors: ");
    for (int divisor = 1; divisor <= number; divisor++) {
        if (number % divisor == 0) printf("%d ", divisor);
    }
    printf("\n");
    return 0;
}

CURRENT STEP

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SELECTED LINE

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EXPECTED OUTPUT FOR THE SAMPLE

Factors: 1 2 3 4 6 8 12 24

0%Step 0 of 0

PROGRAM EXPLANATION

Algorithm and explanation

Read the required input values.
Print each integer that divides the number with zero remainder.
Display the computed result.

Print each integer that divides the number with zero remainder.

EFFICIENCY

Time and space complexity

Time complexity

O(n)

Auxiliary space

O(1)

DEBUGGING CHECKLIST

Common mistakes

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Use the correct format specifier for every variable.

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Initialize variables before using their values.

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Check braces, semicolons and input order carefully.

Try it yourself

Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.