Sams Teach Yourself C in 21 Days

14: buffer[x++] = ch;

15:

16: buffer[x] = ‘\0’;

17:

18: printf(“%s”, buffer);

19:

20: return 0;

21: }

Here’s a string

Here’s a string

346 Day 14

LISTING14.5 continued

INPUT/

OUTPUT

Remember that getch()isn’t an ANSI-standard command. This means that

your compiler (and other compilers) might or might not support it. getch()

is supported by Symantec and Borland. Microsoft supports _getch(). If you

have problems using this command, you should check your compiler and see

whether it supports getch(). If you’re concerned about portability, you

should avoid non-ANSI functions. The Bloodshed Dev-C++ compiler included

with this book has support for getch(); however, its support is different

than described above—another issue with non-ANSI functions.

Caution

Thegetche()Function

This is a short section, because getche()is exactly like getch(), except that it echoes

each character to stdout. Modify the program in Listing 14.4 to use getche()instead of

getch(). When the program runs, each key you press is displayed on-screen twice—once

as echoed by getche(), and once as echoed by putchar().

getche()is not an ANSI-standard command, but many C compilers

Caution support it.

Thegetc()andfgetc()Functions

Thegetc()andfgetc()character input functions don’t automatically work with stdin.

Instead, they let the program specify the input stream. They are used primarily to read

characters from disk files. See Day 16 for more details.

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