Question

write a program to display the series
S=1+1+2+3+5+....n​

Answer 1

Explanation:

++ program to find sum of series

#include <iostream>

using namespace std;

// Function to return sum of

// 1/1 + 1/2 + 1/3 + ..+ 1/n

class gfg

{

public : double sum(int n)

{

double i, s = 0.0;

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

s = s + 1/i;

return s;

}

};

// Driver code

int main()

{

gfg g;

int n = 5;

cout << "Sum is " << g.sum(n);

return 0;

}

Answer 2

Answer:

Note: Note: I am using C programming language.

#include<stdio.h>

void fibo(int n)

{    int ft=0,st=1,nt,i;       //ft means first term

    for(i=1;i<=n;i++)

   {

       printf(" %d ",st);       //st means second term

       nt=ft+st;

       ft=st;

       st=nt;                   //nt means next term

   }

}

int main()

{

   int n;

   printf("Enter the value of n :");

   scanf("%d",&n);

   fibo(n);

   return 0;

}

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