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- /*
- ** Print a line of text, displaying Ctrl characters using leading carets
- ** public domain by Bob Stout
- */
-
- void ctrl_print(char *line)
- {
- while (*line)
- {
- if (' ' > *line)
- {
- putchar('^');
- putchar('@' + (*line++));
- }
- else putchar(*line++);
- }
- if (!strcmp((line - 2), "\x0d\x0a") || !strcmp((line - 2), "\x0a\x0d"))
- putchar('\n');
- }
-
- #ifdef TEST
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <ctype.h>
-
- main()
- {
- char *p, *test = "This is a test";
-
- for (p = strupr(test); *p; ++p)
- {
- if (isalpha(*p))
- *p = *p - 64;
- }
- ctrl_print(test);
- return EXIT_SUCCESS;
- }
-
- #endif /* TEST */
-