__ Code:-__

#include<stdio.h>

int fib(int n)

{

if(n==1||n==2)

return 1;

return (fib(n-1)+fib(n-2));

}

int main()

{

int n,i,sum=0;

printf("Enter number of term in fibbo series\n");

scanf("%d",&n);

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

{

sum=sum+fib(i);

}

printf("Sum of the series is: %d",sum);

return 0;

}

__Output:-__

Enter number of term in fibbo series

5

Sum of the series is: 12

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__Key points:-__

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