Simple file copy example using functions

cpsimple.c

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

int main(int argc, char *argv[])
{
    return copy(open_file_for_reading(argv[1]), open_file_for_writing(argv[2]));
}

int copy(FILE *source_file, FILE *target_file)
{
    char current_char;

    while(current_char != EOF){
        current_char = fgetc(source_file);
        fputc(current_char, target_file);
    }

    return fclose(source_file) && fclose(target_file);
}

FILE *open_file_for_reading(char *file_name)
{
    FILE *file;

    file = fopen(file_name, "r");

    if(!file){
        puts("Ops, source file not found");
        exit(EXIT_FAILURE);
    }

    return file;
}

FILE *open_file_for_writing(char *target_file_name)
{
    FILE *target_file;

    target_file = fopen(target_file_name, "w");

    if(!target_file){
        puts("Ops, could allocate target_file");
        exit(EXIT_FAILURE);
    }

    return target_file;
}