/*Exercise 3 - Repetition

Write a C program to calculate the sum of the numbers from 1 to n.
Where n is a keyboard input.

e.g.

n -> 100
sum = 1+2+3+....+ 99+100 = 5050

n -> 1-
sum = 1+2+3+...+10 = 55 */

# include <stdio.h> 
int main (void) 
{
	int n,sum=0,x ; 
	
	printf ("n: ") ;
	scanf ("%d",&n) ;
	
	for (x=1;x<=n;++x) 
	{
		sum = sum + x ;
	} 
	
	printf ("\nsum is : %d",sum) ;  
	return 0 ; 
	
}
