bindump.c

/*******************************
 * Bindump 1.0 (Binary Dump)   *
 * Author: Michael Warren      *
 * Date: Sat Mar 23 2019       *
 * License: Michael Warren FSL *
 *******************************/

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

int main( int argc, char **argv ){
    FILE *fp;
    int c;
    if( !(fp = fopen( argv[1], "r" )) ){
        perror( argv[0] );
        exit( errno );
    }
    while( (c = fgetc( fp )) != EOF ){
        uint8_t b = 0x80;
        while( b ){
            if( b & c ) putchar( '1' );
            else putchar( '0' );
            b >>= 1;
        }
        putchar( ' ' );
        if( ftell( fp ) % 8 == 0 ) putchar ( '\n' );
    }
    fclose( fp );
    putchar( '\n' );
    return 0;
}