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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>
void main(void)
{
char *p, *test = "This is a test";
for (p = strupr(test); *p; ++p)
{
if (isalpha(*p))
*p = *p - 64;
}
ctrl_print(test);
}
#endif /* TEST */
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