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() {
    void main()
    {
      int i,n,sum=0;
      printf("Input number :");
      scanf("%d", &n);
      
      for(i=1; i<=n ;i++)
      {
        sum+=1;
      }
      printf("Sum : %d\n" ,sum);
    return 0;
  }
  
  