In this tutorial, i am going to show you how to display Fibonacci series using for loop, while loop, recursion and function in c programs.

## All C Programs and Algorithm to Display Fibonacci Series

- Algorithm Of Fibonacci Series
- C Program to Display Fibonacci Series using While Loop
- C Program to Display Fibonacci Series using For Loop
- C Program to Display Fibonacci Series using Recursion
- C Program to Display Fibonacci Series using Function

### Algorithm Of Fibonacci Series

Just follow the below given algorithm to write a program to print fibonacci series; is as follows:

- Start Program
- Declare Some variables.
- Initialize the variables.
- Take input number of terms of Fibonacci series to be printed from user.
- Find and Print fibonacci terms of series.
- End Program.

### C Program to Display Fibonacci Series using While Loop

#include <stdio.h> int main() { int Number, i = 0, Next, First_Value = 0, Second_Value = 1; printf("\n Please Enter the Range Number: "); scanf("%d",&Number); while(i < Number) { if(i <= 1) { Next = i; } else { Next = First_Value + Second_Value; First_Value = Second_Value; Second_Value = Next; } printf("%d \t", Next); i++; } return 0; }

The result of the above c program; is as follows:

Please Enter the Range Number: 15 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377

### C Program to Display Fibonacci Series using For Loop

#include <stdio.h> int main() { int Number, Next, i, First_Value = 0, Second_Value = 1; printf("\n Please Enter the Range Number: "); scanf("%d",&Number); /* Find & Displaying */ for(i = 0; i <= Number; i++) { if(i <= 1) { Next = i; } else { Next = First_Value + Second_Value; First_Value = Second_Value; Second_Value = Next; } printf("%d \t", Next); } return 0; }

The result of the above c program; is as follows:

Please Enter the Range Number: 10 0 1 1 2 3 5 8 13 21 34 55

### C Program to Display Fibonacci Series using Recursion

#include<stdio.h> int FibSeries(int); int main() { int Num, i = 0, j; printf("\n Please Enter upto which you want too print: "); scanf("%d", &Num); printf("Fib series\n"); for ( j = 0 ; j <= Num ; j++ ) { printf("%d\t", FibSeries(j)); } return 0; } int FibSeries(int Num) { if ( Num == 0 ) return 0; else if ( Num == 1 ) return 1; else return ( FibSeries(Num - 1) + FibSeries(Num - 2) ); }

The result of the above c program; is as follows:

Please Enter upto which you want too print: 10 Fib series 0 1 1 2 3 5 8 13 21 34 55

### C Program to Display Fibonacci Series using Function

#include<stdio.h> void Fibseries(int Number) ; int main() { int Number; printf("Enter the number of terms\n"); scanf("%d", &Number); printf("First %d :\n", Number); Fibseries(Number) ; return 0; } void Fibseries(int Number) { int i, First_Value = 0, Second_Value = 1, Next; for(i = 0; i <=Number; i++) { if(i <= 1) { Next = i; } else { Next = First_Value + Second_Value; First_Value = Second_Value; Second_Value = Next; } printf("%d\t", Next); } }

The result of the above c program; is as follows:

Enter the number of terms 10 First 10 : 0 1 1 2 3 5 8 13 21 34 55

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