Header file:
wctype.h
Synopsis:
int iswcntrl(wint_t input)
Description:
Returns non-zero if the given input is a control character. Otherwise it returns 0.
Sample program for iswcntrl in C:
#include <stdio.h>
#include <wchar.h>
#include <wctype.h>
int main() {
wint_t wide_char;
char input;
printf("Enter your input:");
/* give ESC as input */
input = getchar();
/* mbtowc -Converts single byte to wide character format */
wide_char = btowc(input);
if (iswcntrl(wide_char))
printf("It is a cntrl char\n");
else
printf("It is not a cntrl char\n");
printf("Return value: %d\n", iswcntrl(wide_char));
return 0;
}
#include <wchar.h>
#include <wctype.h>
int main() {
wint_t wide_char;
char input;
printf("Enter your input:");
/* give ESC as input */
input = getchar();
/* mbtowc -Converts single byte to wide character format */
wide_char = btowc(input);
if (iswcntrl(wide_char))
printf("It is a cntrl char\n");
else
printf("It is not a cntrl char\n");
printf("Return value: %d\n", iswcntrl(wide_char));
return 0;
}
Output:
Enter your input:^[
It is a cntrl char
Return value: 2
It is a cntrl char
Return value: 2
No comments:
Post a Comment