BF Compiler

#include <stdio.h>
#include <stack>

int main(){
    std::stack<int> s;
    int pos;
    char in[100000];
    printf( "BF: "); gets( in );
    FILE* a = fopen( "out.bin", "w" );
    int p = 0x9D93;



    fprintf( a, "%c%c%c%c%c", 0xBB, 0x6D, 0x21, 0xEC, 0x86 ); p+=5;
     fprintf( a, "%c", 0x76 ); p+=1;
    fprintf( a, "%c%c", 0x3E, 0xFF ); p+=2;
    fprintf( a, "%c%c%c%c%c%c%c%c%c", 0x36, 0, 0x23, 0x3D, 0xFE, 0, 0xC2, p&0xFF, (p>>8)&0xFF ); p+=9;
    fprintf( a, "%c%c%c", 0x21, 0xEC, 0x86 ); p+=3;

    for( int i = 0; in[i] != 0; i ++ ){
        switch( in[i] ){
            case '+':
                fprintf( a, "%c", 0x34 ); p++;
                break;
            case '-':
                fprintf( a, "%c", 0x35 ); p++;
                break;
            case '>':
                fprintf( a, "%c", 0x23 ); p++;
                break;
            case '<':
                fprintf( a, "%c", 0x2B ); p++;
                break;
            case '[':
            {
                s.push( p+6 );
                int pp = p;
                for( int j = i+1, depth = 1; in[j] != 0; j++ ){
                    if( in[j] == '[' ) depth ++;
                    if( in[j] == ']' ) depth --;

                    if( in[j] == '+' || in[j] == '-' || in[j] == '<' || in[j] == '>' ){
                        pp++;
                    }
                    if( in[j] == '[' || in[j] == ']' ){
                        pp+=6;
                    }
                    if( in[j] == '.' || in[j] == ',' ){
                        pp+=4;
                    }
                    if( depth <= 0 ) break;
                }
                fprintf( a, "%c%c%c%c%c%c", 0x7E, 0xFE, 0x00, 0xCA, pp&0xFF, (pp>>8)&0xFF ); p+=6;
            } break;
            case ']':
            {
                int pp = s.top( );
                s.pop();
                fprintf( a, "%c%c%c%c%c%c", 0x7E, 0xFE, 0x00, 0xC2, pp&0xFF, (pp>>8)&0xFF ); p+=6;
            } break;
            case '.':
            {
                fprintf( a, "%c%c%c%c", 0x7E, 0xEF, 0x04, 0x45 ); p+=4;
            } break;
        }
    }
    fprintf( a, "%c", 0xC9 ); p+=1;
}