Code 1:

1. Write a program to generate the Fibonacci series in c

2. Write a program to
print Fibonacci series in c

3. Basic c programs Fibonacci
series

4. How to print Fibonacci
series in c

5. How to find Fibonacci
series in c programming

6. Fibonacci series in c
using for loop

#include <stdio.h>

int main(){

int k,r;

long int i=0l,j=1,f;

//Taking maximum numbers form user

printf( "Enter the number range:" );

scanf( "%d" ,&r);

printf( "FIBONACCI SERIES: " );

printf( "%ld %ld" ,i,j); //printing firts
two values.

for (k=2;k<r;k++){

f=i+j;

i=j;

j=f;

printf( " %ld" ,j);

}

return 0;

}

Sample output:

Enter the number range: 15

FIBONACCI SERIES: 0 1 1 2 3 5 8 13
21 34 55 89 144 233 377

Code 2:

1. Fibonacci series using
array in c

2. Fibonacci series
program in c language

3. Source code of Fibonacci
series in c

4. Wap to print Fibonacci
series in c

#include <stdio.h>

int main(){

int i,range;

long int arr[40];

printf( "Enter the number range: " );

scanf( "%d" ,&range);

arr[0]=0;

arr[1]=1;

for (i=2;i<range;i++){

arr[i]
= arr[i-1] + arr[i-2];

}

printf( "Fibonacci
series is: " );

for (i=0;i<range;i++)

printf( "%ld
" ,arr[i]);

return 0;

}

Sample output:

Enter the number range: 20

Fibonacci series is: 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377
610 987 1597 2584 4181

Code 3:

1. Fibonacci series in c
using while loop

2. C program to calculate
Fibonacci series

3. C program to display Fibonacci
series

4. Fibonacci series in c
with explanation

5. C code to generate Fibonacci
series

#include <stdio.h>

int main(){

int k=2,r;

long int i=0l,j=1,f;

printf( "Enter the number range:" );

scanf( "%d" ,&r);

printf( "Fibonacci series is: %ld %ld" ,i,j);

while (k<r){

f=i+j;

i=j;

j=f;

printf( " %ld" ,j);

k++;

}

return 0;

}

Sample output:

Enter the number range: 10

Fibonacci series is: 0 1 1 2 3 5 8 13 21 34

Code 4:

1. Sum of Fibonacci
series in c

#include <stdio.h>

int main(){

int k,r;

long int i=0,j=1,f;

long int sum = 1;

printf( "Enter the number range: " );

scanf( "%d" ,&r);

for (k=2;k<r;k++){

f=i+j;

i=j;

j=f;

sum = sum + j;

}

printf( "Sum of Fibonacci
series is: %ld" ,sum);

return 0;

}

Sample output:

Enter the number range: 4

Sum of Fibonacci series is: 4

Algorithm:

What is Fibonacci series?

Logic of Fibonacci series

Definition
of Fibonacci numbers:

We
assume first two Fibonacci are 0 and 1

A
series of numbers in which each sequent number is sum of its two previous numbers
is known as Fibonacci series and each numbers are called Fibonacci
numbers. So Fibonacci numbers is

Algorithm for Fibonacci series

F_{n} = F_{n-2} _{ } + F_{n-1}

Example
of Fibonacci series:

0 , 1
,1 , 2 , 3 , 5 , 8 , 13 , 21 , 34 , 55 ...

5 is Fibonacci
number since sum of its two previous number i.e. 2 and 3 is 5

8 is Fibonacci
number since sum of its two previous number i.e. 3 and 5 is 8 and so on.