C Program to Generate and Print Fibonacci series upto a given inputted number

    In this example, we will generate and print fibonacci series upto a the upper limit entered by the user. To solve this problem we should have a proper concept on Fibonacci series and while loop. 

What is a Fibonacci Series?

Fibonacci series is the sum of the two preceding numbers, starting from 0 and 1.

    For Example: 0,1,1,2,3,5,8,13,....,etc 

PROGRAM

#include<stdio.h>

#include<conio.h>

void main()

{

    int n,x1,x2,x3=0;

    printf("Enter the limit upto which fibonacci series to be generated : ");

    scanf("%d",&n);

    x1=0;

    x2=1;

    printf("%d\t%d",x1,x2);

    x3=x1+x2;

    while(x3<=n)

    {

        printf("\t%d",x3);

        x1=x2;

        x2=x3;

        x3=x1+x2;

    }

    getch();

}

OUTPUT:

Enter the limit upto which fibonacci series to be generated : 30

0       1       1       2       3       5       8       13      21

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