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Fibonacci series in C

## Write a C Program to generate the first n terms of the Fibonacci series.

#include<stdio.h>

void main()

{

int f,s,t,n,i; //’f’ is 1st num,’s’ is 2nd num,’t’ for 3rd new generated num, ‘n’ is no.of terms, ‘i’ is for iterations.

printf(“Enter a value : “);

scanf(“%d”,&n); // Read the number terms to print from the series.

if(n<=0)

{

printf(“Please enter a valid number\n”);

return;

}

f=0;

printf(“The FIBONACCI Series is :\n%d”,f);

if(n>1)

{

s=1;

printf(“\t%d”,s);

}

else

return;

for(i=2;i<n;i++)

{

t=f+s;//By adding of preceding numbers next numbers will generate in Fibonacci series.

printf(“\t%d”,t);

f=s;

s=t;//Shifting the last two terms of series to ‘f’ & ‘s’ for generating next number in the series.

}

return;

}

Output:

i) Enter a value : 16

The FIBONACCI Series is :

0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610

ii) Enter a value : 0

Please enter a valid number

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Task: Write a C program to generate the given range of terms of Fibonacci series.

For example user entered 7 & 10 then output will be: 8 13 21 34