void CharCount(char *argv)
{
int i, sum=0;
unsigned long byte;
BIT_FILE *input_file;
//get pointers of the input file and output file by argument from command line
input_file = OpenInputBitFile(argv);
//initialize symboy counter array symbo[NUM]
memset(symbol, 0, sizeof(int)*NUM);
while (1) {
byte = InputBits(input_file, 8);
symbol[byte]++;
if (byte == 256) {
break;
}
}
for (i=0; i<NUM; i++) {
sum += symbol[i];
}
printf("total weight: %d\n", sum);
}
int main(int argc, char *argv[])
{
FILE *output;
BIT_FILE *input;
setbuf( stdout, NULL );
if ( argc < 3 )
usage_exit( argv[ 0 ] );
input = OpenInputBitFile( argv[ 1 ] );
if ( input == NULL )
fatal_error( "Error opening %s for input\n", argv[ 1 ]);
output = fopen( argv[ 2 ], "wb" );
if ( output == NULL )
fatal_error( "Error opening %s for output\n", argv[ 2 ]);
printf( "\nExpanding %s to %s\n", argv[ 1 ], argv[ 2 ] );
printf( "Using %s\n", CompressionName );
argc -= 3;
argv += 3;
ExpandFile( input, output, argc, argv );
CloseInputBitFile( input );
fclose( output );
putc( '\n', stdout );
return( 0 );
}