programming-examples/c/Series_Programs/C Program to find sum of series 1 + 12 + 13 + ....... + 1n..c

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2019-11-15 12:59:38 +01:00
/* Sum of series - Program to find sum of series 1 + 1/2 + 1/3 + ....... + 1/n */
#include <stdio.h>
#include <conio.h>
void main()
{
int n ;
float i, s=0 ;
clrscr() ;
printf("Enter n: ") ;
scanf("%d", &n) ;
for(i=1 ; i<=n ; i++)
s=s+1/i ;
/* i has to be float in the above expression. If i is int then s is always 1.000000 since 1/i will be 0 for all i>1 */
printf("Sum of the required series is %f", s) ;
getch() ;
}
/*
Output :
Enter n: 3
Sum of the required series is 1.833333
*/