`P055.c`¶

Problem Statement

WAP to print n terms of Fibbonacci Series (Starting from term 0)

Metadata¶

Property	Detail
Author	Amit Dutta (amitdutta4255@gmail.com)
License	MIT
Difficulty	Beginner (index: 2 / 10)

Concepts¶

Beta Feature

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Recursion
Iteration

Actions¶

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Source Code¶

#include <stdio.h>

void printFibonacci(int);

void printFibonacci(int n)
{
    int val1 = 0, val2 = 1, val3, i;
    printf("\nFibonacci series upto %d terms :", n);
    if (n < 0)
        printf("  N/A");
    if (n == 0)
        printf("  %d", val1);
    if (n > 0)
        printf("  %d  %d", val1, val2);
    for (i = 2; i <= n; i++)
    {
        val3 = val1 + val2;
        printf("  %d", val3);
        val1 = val2;
        val2 = val3;
    }
}

int main()
{
    int n;
    printf("Enter the n : ");
    scanf("%d", &n);
    printFibonacci(n);
    return 0;
}

Explanation¶

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    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (P055.c):

    #include <stdio.h>

    void printFibonacci(int);

    void printFibonacci(int n)
    {
        int val1 = 0, val2 = 1, val3, i;
        printf("\nFibonacci series upto %d terms :", n);
        if (n < 0)
            printf("  N/A");
        if (n == 0)
            printf("  %d", val1);
        if (n > 0)
            printf("  %d  %d", val1, val2);
        for (i = 2; i <= n; i++)
        {
            val3 = val1 + val2;
            printf("  %d", val3);
            val1 = val2;
            val2 = val3;
        }
    }

    int main()
    {
        int n;
        printf("Enter the n : ");
        scanf("%d", &n);
        printFibonacci(n);
        return 0;
    }

P055.c¶