#include <stdio.h>
#include <stdlib.h>

///////////////////////////////////
//                               //
// You may copy/adapt this code. //
//                               //
///////////////////////////////////

int main(int argc, char* argv[]) {
    // argc is the number of command-line arguments, *including* the
    // command itself.
    //
    // ./264echo "the neemotode has < 200 neurons (sp?)"
    // ↑         ↑
    // argv[0]   argv[1]
    //
    // argv[0] == "./264echo"
    // argv[1] == "the neemotode has < 200 neurons (sp?)"

    if(argc == 2) {
        printf("%s\n", argv[1]);
    }
    else {
        fprintf(stderr, "Usage: %s STRING", argv[0]);
        // Usage:  ./264echo STRING
    }
    // stderr just means any error messages that you want to see on your
    // terminal, even if you are redirecting the normal output to a file.
    //
    //
    
    return EXIT_SUCCESS;
}

    // Example:  When we compile this, we will run the following:
    // gcc -o 264echo 264echo.c
    // ↑   ↑  ↑       ↑
    // │   │  │       │
    // arg[0] argv[2] argv[3] == "264echo.c"
    //     │
    //     argv[1] == "-o"  … and so on
    //
    // argc == 4
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