16-Bit Language Tools Libraries
islower (Continued)
Output:
B is NOT lower case
b is lower case
isprint
Description:
Include:
Prototype:
Test for a printable character (includes a space).
<ctype.h>
int isprint (int c );
Argument:
c
character to test
Return Value:
Remarks:
Example:
Returns a non-zero integer value if the character is printable; other-
wise, returns zero.
A character is considered to be a printable character if it is in the range
0x20 to 0x7e inclusive.
#include <ctype.h> /* for isprint */
#include <stdio.h> /* for printf */
int main(void)
{
int ch;
ch = '&';
if (isprint(ch))
printf("& is a printable character\n");
else
printf("& is NOT a printable character\n");
ch = '\t';
if (isprint(ch))
printf("a tab is a printable character\n");
else
printf("a tab is NOT a printable character\n");
}
Output:
& is a printable character
a tab is NOT a printable character
ispunct
Description:
Include:
Prototype:
Test for a punctuation character.
<ctype.h>
int ispunct (int c );
Argument:
c
character to test
DS51456E-page 18
Return Value:
Remarks:
Returns a non-zero integer value if the character is a punctuation char-
acter; otherwise, returns zero.
A character is considered to be a punctuation character if it is a print-
able character which is neither a space nor an alphanumeric character.
Punctuation characters consist of the following:
!"#$%&'();<=>?@[\]*+,-./:^_{|}~
? 2008 Microchip Technology Inc.
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