C Programming language

To enter a number we first define an integer variable then use a scanf("%d",&a) method. This method is used to take input from keyboard. We can enter number, float or character by using this method. We have use %d, %f and %c reactively at place of first argument. The second argument is used to store the value at variable location.

To find factor we are using for loop which iterate from 1 to a .We are checking the modulo of a and value from 1 to a. If it return zero then this mean the it is factor of a and print it.

/* Enter a number and show its factor */

#include<stdio.h>
#include<conio.h>
void main()
{
	int a,i;
	clrscr();
	printf("Enter a number\t");
	scanf("%d",&a);
	for(i=1;i<=a;i++)
	{
		if(a%i==0)
			printf("\nFactor of the number is\t=%d",i);
	}
	getch();
}