text: /*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() {
  
    int i;
    int num;
    int sum = 0;
  
    printf("Enter the number:");
    scanf("%d",&num);
  
    for( i=0 ;i <=num ;++i)
    {
      sum = sum + i;
    }
    printf("%d",sum);
    
    return 0;
  }
  
  