If i have done some mistake so please explain.

Question

Sum of series 1+2+4+7+11....+n terms
https://code.sololearn.com/cKq3NG8yYF8A/?ref=app

Answer 1

#include <stdio.h>
int main() {
int i,N,term=1,sum=0;
//● term for current term
//● variable sum for summing up terms
//clrsr()
printf("enter the value of N:\n");
scanf("%d",&N);
for(i=1;i<=N;i++)
{
sum=sum+term; //● for adding terms to sum variable
term=term+i; //● for getting to next term
}
printf("sum of series:%d",sum);
//● printing sum here , not N
return 0;
}

Answer 2

Lata Mishra
● in your code, U have used sum variable [it was not calculating sum of N terms, but it was calculating (N+1)th term of series]
//see comments I made in above answer for better understanding 👍

Answer 3

line no. 12
printf("sum of series :%d", sum);

you are supposed to print the sum not the input

Answer 4

which term?

Answer 5

term is the difference between two consecutive numbers that are to be added

term for 1 and 2 is 1
term for 2 and 4 is 2
term for 4 and 7 is 3

and so on...

Answer 6

Still confused why i need to use "term"

Answer 7

Used by Gaurav agrawal

Answer 8

Ok
but you should first explain mistakes and talk respectfully