# C Program to display Fibonacci Numbers

Published on December 13, 2016 by Senthil Kumar

Filed under C

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# Problem

Write a program in C to display the sequence of Fibonacci numbers of first n numbers entered by the user.

# How to display Fibonacci sequence in C Language ?

Before writing a program to display the Fibonacci sequence , it is important to understand what exactly is the Fibonacci sequence.

It is a series where the next number is the sum of the previous 2 numbers in the sequence. By default , the first two numbers are 0 and 1.

```#include <stdio.h>
int main()
{
printf("Abundantcode.com's coding sample\n");
int number1 = 0, number2 = 1, nextnumber = 0, input;

printf("Enter a number: ");
scanf("%d", &input);
printf("Fibonacci Series: %d, %d, ", number1, number2);
nextnumber = number1 + number2;
while(nextnumber <= input)
{
if(nextnumber==input)
printf("%d",nextnumber);
else
printf("%d, ",nextnumber);
number1 = number2;
number2 = nextnumber;
nextnumber = number1 + number2;
}

return 0;
}```

### Output

Abundantcode.com’s coding sample
Enter a number: 5
Fibonacci Series: 0, 1, 1, 2, 3, 5

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