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C : Display Factors of a Number

Tutorial by:Manisha Dubey      Date: 2016-06-17 03:46:05

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Example to find all the factors of an integer (entered by the user) using for loop and if statement.

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

Example: Factors of a Positive Integer

#include <stdio.h>
int main()
{
    int number,i;

    printf("Enter a positive integer: ");
    scanf("%d",&number);
    printf("Factors of %d are: ", number);

    for(i=1; i <= number; ++i)
    {
        if (number%i == 0)
        {
            printf("%d ",i);
        }
    }

    return 0;
}

Output

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

 

 
 

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

The for loop is iterated until i <= number is false. In each iteration, whether number is exactly divisible by i is checked (condition for i to be the factor of number) and the value of i is incremented by 1.

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