text: // Program to calculate the sum of first n natural numbers
  // Positive integers 1,2,3,4..., n are known as natural numbers
  
  #include <stdio.h>
  
  int main()
  {
  	int num, count, sum = 0;
  	printf("Enter a positive integer: ");
  	scanf("%d", &num);
  	
  	// for loop terminates when num is less than count
  	for (count = 1; count <= num; ++count)
  	{
  	   sum += count;
  	}
  	printf("sum = %d \n", sum);
  	
  	return 0;
  }
  