C Program to Compute First N Fibonacci Numbers using Command Line Arguments

This C Program computes first N fibonacci numbers using command line arguments.

Here is source code of the C Program to compute first N fibonacci numbers using command line arguments. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

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/*
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 * C Program to Compute First N Fibonacci Numbers using Command Line Arguments

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 */
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#include <stdio.h>
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/* Global Variable Declaration */
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int first = 0;
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int second = 1;
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int third;
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/* Function Prototype */
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void rec_fibonacci(int);
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void main(int argc, char *argv[])/* Command line Arguments*/

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{
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    int number = atoi(argv[1]);
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    printf("%d\t%d", first, second); /* To print first and second number of fibonacci series */

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    rec_fibonacci(number);
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    printf("\n");
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}
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/* Code to print fibonacci series using recursive function */

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void rec_fibonacci(int num)
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{
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    if (num == 2)    /* To exit the function as the first two numbers are already printed */

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    {
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        return;
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    }
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    third = first + second;
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    printf("\t%d", third);
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    first = second;
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    second = third;
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    num--;
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    rec_fibonacci(num);
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}
```

$ cc arg6.c
$ a.out 10
0       1       1       2       3       5       8       13      21      34

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