The iswblank() is a built-in function in C/C++ which checks if the given wide character is a blank character or not. It is defined within the cwctype header file of C++. Syntax:
int iswblank(ch)
Parameter: The function accepts a single mandatory parameter ch which specifies the wide character which we have to check that if it is a blank character or not. Return Value: The function returns two values which are described below:
- If the ch is a blank character, then a non-zero value is returned.
- If it is not then 0 is returned.
Below programs illustrate the above function. Program 1:
CPP
// Program to illustrate // iswblank() function #include <cwctype> #include <iostream> using namespace std;
int main()
{ wchar_t ch1 = ' ' ;
wchar_t ch2 = 'i' ;
// check if character is blank or not
if (isblank(ch1))
cout << "ch1 is blank \n";
else
cout << "ch1 is not blank\n";
// check if character is blank or not
if (isblank(ch2))
cout << "ch2 is blank \n";
else
cout << "ch2 is not blank\n";
return 0;
} |
Output:
ch1 is blank ch2 is not blank
Program 2:
CPP
// Program to illustrate // isblank() function #include <cwctype> #include <iostream> using namespace std;
int main()
{ wchar_t ch1 = '3' ;
wchar_t ch2 = ' ' ;
// check if character is blank or not
if (isblank(ch1))
cout << "ch1 is blank \n";
else
cout << "ch1 is not blank\n";
// check if character is blank or not
if (isblank(ch2))
cout << "ch2 is blank \n";
else
cout << "ch2 is not blank\n";
return 0;
} |
Output:
ch1 is not blank ch2 is blank