Calculate the sum of the first N terms of the harmonic series:
\(1 + \frac{1}{2}+\frac{1}{3}+\cdots+\frac{1}{N}\)

#include <stdio.h>
#include <conio.h>

void main()
{
	int N; 
 	int I;
 	float SUM;
 
	do
   	{
     		printf ("Number of terms: ");
    		scanf ("%d", &N);
   	}while (N<1);


 	for (SUM=0.0, I=1 ; I<=N ; I++)
    		SUM += (float)1/I;
  
	printf("Sum of the first %d terms is equal to %f \n", N, SUM);

	getch();
}