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 n,i=1;
    int sum=0;
  
    printf("Enter the number : ");
    scanf("%d",&n);
  
    while(i!=(n+1))
    {
      sum=sum+i;
      i++;
    }
    printf("sum is :%d",sum);
    return 0;
  }
  
  