write simple data to a file

writesimpledata.c

/*----------------------------------
create a program that creates a file
and makes a copy of it. Command line usage:
./test <infile> <outfile>
-----------------------------------*/

#include <stdio.h>

int main(int argc, char* argv[])
{

    //------------------------------------//
    //~*~*~*~*VALIDATE USER INPUTS*~*~*~*~//
    //------------------------------------//

    // validate command line arguments
    if (argc != 3)
    {
        printf("error: proper usage: ./test <infile> <outfile>\n");
        return 1;
    }
    printf("%s %s %s\n", argv[0], argv[1], argv[2]);

    // validate infile
    char* input_file_name = argv[1];
    FILE* input_file_pointer = fopen(input_file_name,"r");

    if (input_file_pointer == NULL)
    {
        printf("Could not open %s\n", input_file_name);
        return 2;
    }

    //------------------------------------//
    //~*~*~*~*WRITE TO OUTPUT FILE*~*~*~*~//
    //------------------------------------//
    char* output_file_name = argv[2];
    FILE* output_file_pointer = fopen(output_file_name, "w");
    char c;
    while(1)
    {
        // we need to break once the null terminator is
        // collected in our variable which is why we
        // have our break statement after assigning
        // our variable c
        // in other words we don't want to write the last
        // byte to our outfile
        c = fgetc(input_file_pointer);

        if (feof(input_file_pointer))
        {
            break;
        }


        fputc(c, output_file_pointer);
        printf("%c", c);
    }
    printf("\n");

    //---------------------------------------//
    //~*~*~*~*CLOSE OUT FILE POINTERS*~*~*~*~//
    //---------------------------------------//

    fclose(input_file_pointer);
    fclose(output_file_pointer);

    return 0;
}