C Program to Display Factors of a Number

To understand this example, you should have the knowledge of the following C programming topics:


This program takes a positive integer from the user and displays all the positive factors of that number.


Factors of a Positive Integer

Output

Enter a positive integer: 60
Factors of 60 are: 1 2 3 4 5 6 10 12 15 20 30 60

In the program, a positive integer entered by the user is stored in num.

The for loop is iterated until i is false.

In each iteration, whether num is exactly divisible by i is checked. It is the condition for i to be a factor of num.

if (num % i == 0) {
            printf("%d ", i);
}

Then the value of i is incremented by 1.