Program to print Fibonacci Series

0 June 21, 2021

In this example, We will learn a Program to print Fibonacci Series. Before that, You must have knowledge of the following topics.

Make sure you have knowledge of Function.

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Algorithm

The algorithm of program is

Step 1: Start
Step 2: Declare variables i, n, t1, and t2
Step 3: Assign t1 = 0 and t2 = 1
Step 4: Declare variable nextTerm and Assign t1 + t1 to nextTerm
Step 5: Take input from user and store in n
Step 6: Repeat this step until i <= n
        Print nextTerm
        t1 = t2
        t2 = nextTerm
        nextTerm = t1 + t2
Step 7: End

Flowchart

The flowchart of program is

Flowchart : Program to print Fibonacci Series

CODE: Program to print Fibonacci Series

Now, We will see the main code to print Fibonacci series of any number

#include <stdio.h>

int main() {
    
    int i, n, t1 = 0, t2 = 1;
    int nextTerm = t1 + t2;
    printf("Enter the number of terms: ");
    scanf("%d", &n);
    printf("Fibonacci Series: %d, %d, ", t1, t2);

    for (i = 1; i <= n; ++i) {
        printf("%d, ", nextTerm);
        t1 = t2;
        t2 = nextTerm;
        nextTerm = t1 + t2;
    }

    return 0;
}

The output of above program is

Enter the number of terms: 5
Fibonacci Series: 0, 1, 1, 2, 3, 5, 8,
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