Print valid C-code with select octals by color.

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


enum ConsoleColor
{
    Black         = 0,
    Blue          = 1,
    Green         = 2,
    Cyan          = 3,
    Red           = 4,
    Magenta       = 5,
    Brown         = 6,
    LightGray     = 7,
    DarkGray      = 8,
    LightBlue     = 9,
    LightGreen    = 10,
    LightCyan     = 11,
    LightRed      = 12,
    LightMagenta  = 13,
    Yellow        = 14,
    White         = 15
};

bool compare(char c){
    char s[] = " \t\n(){}+=-/*&%x;,";
    for(int i = 0; s[i]; i++)
        if(c == s[i]) return true;
    return false || (c == EOF);
}

int main(int argc, char **argv){
    char ch;
    bool free = true;
    FILE *fIN;
    //SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), (WORD)(White));
    if(argc < 2)
        fIN = fopen("input.c", "r");
    else
        fIN = fopen(argv[1], "r");

    //some octals: 023 0df 0123 0x123 123 25
    while((ch = getc(fIN)) != EOF){
        if(!free){
            if(compare(ch))
                free = true;
            putchar(ch);
        }else{
            if(ch == '0'){
                if(!compare(ch = getc(fIN))){
                    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), (WORD)(Brown));
                    putchar('0'); putchar(ch);
                    while(!compare(ch = getc(fIN)))
                        putchar(ch);
                    SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), (WORD)(White));
                    if(ch != EOF) putchar(ch);
                }
            }else{
                free = false;
                putchar(ch);
            }
        }
    }

    return 0;
}