To display the n terms of harmonic series and their sum. 1 + 1/2 + 1/3 + 1/4 + 1/5 ... 1/n terms.

 #include <stdio.h>

int main()

{

   int i,num1;

   float num2=0;

   printf("Input the number of terms in the series: \n");

   scanf("%d",&num1);

   for(i=1;i<=num1;i++)

   {

       if(i<=num1)      

      {

              printf("1/%d + ",i);

              num2+=1/(float)i;

       }

   }

        printf("\nSum of Series upto %d terms : %f \n",num1,num2);

  return 0;

}

OUTPUT:

Input the number of terms in the series:

5

1/1 + 1/2 + 1/3 + 1/4 + 1/5

Sum of Series upto 5 terms : 2.283334

Input the number of terms in the series:

10

1/1 + 1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/7 + 1/8 + 1/9 + 1/10

Sum of Series upto 10 terms : 2.928968