/*
    args.c

    Jeff Ondich, 27 March 2023
    Modified by Tanya Amert for Fall 2024

    A tiny experiment with command-line arguments.

    Compile as usual:

        gcc -Wall -Werror -g -o args args.c

    Run with zero or more command-line arguments:

        ./args
        ./args cheddar lulu
        ./args a b c d e f g whatever blah blah blah

    Read the code to figure out what:

        argc means
        argv[0] points to
        argv[k] points to for k > 0

    Also, read the code to figure out how to get a picture
    of a beaver to print out.
*/

#include <stdio.h>
#include <string.h>

// Method declarations
void print_beaver();

// Echos command-line arguments back to the user,
// and in a special case, displays a beaver!
//
// Parameters:
//   - argc: integer number of command-line arguments
//   - argv: pointer to array of command-line arguments (as chars)
//
// Returns: an integer status (0 if the program completed successfully)
int main(int argc, char *argv[]) // read this as an array of strings
{
    printf("Your command line includes %d arguments:\n", argc);
    for (int k = 0; k < argc; k++)
    {
        printf("  argv[%d] --> %s\n", k, argv[k]);
    }

    if (argc >= 3 && strcmp(argv[2], "beaver") == 0)
    {
        printf("\nCongratulations! You get an extra surprise!\n\n");
        print_beaver();
    }

    return 0;
}

// Displays a beaver to standard output.
void print_beaver()
{
    // Note: modified the image slightly to take up less horizontal space
    printf("                                    A\n");
    printf("             ___                   / \\\n");
    printf("          .=\"   \"=._.---.         /   \\         ____________\n");
    printf("        .\"         c \' Y\'`p      /     \\       /)  -\n");
    printf("       /     \\     `\\  w_/      :~~~~~~~:     / )-   .   -\n");
    printf(" jgs   |      )  /     /        |       |    <  )      -- \n");
    printf(" ______|     /__-\\ \\_=.\\        |       |     \\ )  -      -\n");
    printf("(XXXXX/\'`------)))`=-\'\"`\'\"_____/__/__\\___\\__ _ \\)___________\n");
    printf(" ~~~~~\n");
    printf("\nhttps://www.asciiart.eu/animals/beaver\n");
}