The iswprint() is a built-in function in C/C++ which checks if the given wide character can be printed or not. It is defined within the cwctype header file of C++. By default, the following characters are printable:
- Digits (0 to 9)
- Uppercase letters (A to Z)
- Lowercase letters (a to z)
- Punctuation characters (!”#$%&'()*+, -./:;?@[\]^_`{|}~)
- Space
Syntax:
int iswprint(ch)
Parameters: The function accepts a single mandatory parameter ch which specifies the wide character which has to be checked if printable or not. Return Value: The function returns two values as shown below.
- If the parameter ch, is printable, then a non-zero value is returned.
- If it is not a printable character then 0 is returned.
Below programs illustrates the above function. Program 1:
CPP
// Program to illustrate // toiswprint() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std;
int main()
{ wchar_t str[] = L"Geeks\tfor\tGeeks";
for ( int i = 0; i < wcslen(str); i++) {
// Function to check if the characters are
// printable or not. If not, then replace
// all non printable character by comma
if (!iswprint(str[i]))
str[i] = ', ' ;
}
wcout << "Printing, if the given wide
character cannot be printed\n";
wcout << str;
return 0;
} |
Output:
Printing , if the given wide character cannot be printed Geeks, for, Geeks
Program 2:
CPP
// Program to illustrate // toiswprint() function #include <cwchar> #include <cwctype> #include <iostream> using namespace std;
int main()
{ wchar_t str[] = L"Ishwar Gupta\t123\t!@#";
for ( int i = 0; i < wcslen(str); i++) {
// Function to check if the characters are
// printable or not. If not, then replace
// all non printable character by comma
if (!iswprint(str[i]))
str[i] = ', ' ;
}
wcout << "Printing, if the given wide
character cannot be printed\n";
wcout << str;
return 0;
} |
Output:
Printing , if the given wide character cannot be printed Ishwar Gupta, 123, !@#