Thread: how do i read two bytes in a row?

  1. #1
    Registered User
    Join Date
    Nov 2016
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    18

    how do i read two bytes in a row?

    hi first look at this code:
    Code:
    #include <stdio.h>
    #include <stdlib.h>
      
    void binary(char byte) {
        unsigned char mask = 0x80;
        for ( ; mask; mask >>= 1)
            putchar(byte & mask ? '1' : '0');
    }
     
    int main( void )
    {
        FILE *fp;
        int c;
      
        if ( (fp = fopen("TEXT.TXT", "rb")) == NULL)
        {
            fprintf(stderr, "Error opening file.");
            exit(1);
        }
     
        while ((c = fgetc(fp)) != EOF)
        {
            binary(c);
            putchar(' ');
        }
     
        putchar('\n');
        fclose(fp);
        return 0;
    }
    fgetc reads fp one byte at a time but how can i read two bytes in a row and save them to arrays like this: first and second byte in c[0] and c[1] and after code is executed third and fourth byte in c[0] and c[1] and on... . ( the code was just for example )

  2. #2
    Programming Wraith GReaper's Avatar
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    2,729
    What you need is a standard function called fread(). Visit the link to see how it works.
    Devoted my life to programming...

  3. #3
    Registered User
    Join Date
    Jun 2015
    Posts
    1,643
    Just use two fgetc's in a row.

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