Program to calculate sum of this special series using for loop in C.

Code Box
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/*Program to calculate sum of series

 1/(1*2)+1/(2*3)+1/(3*4)+.......+1/((n-1)*n)

 where n is the value entered by user.

 =>Explicit type conversion
 =>Nested loop
*/

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int i,n;
float sum,mul;
clrscr();
sum=0;


printf("\nEnter limit number : ");
scanf("%d",&n);


printf("\nSeries=");

printf("\n---------------------\n");

for(i=1;i<n;i++)
{

mul=i*(i+1);
printf(" +1/(%d*%d) ",i,i+1);


sum=sum+(float)1/mul;  //Explicit type conversion
}

printf("\n---------------------\n");

printf("\nSum of series= %.3f",sum);

getch();
}