iswblank() function in C/C++
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
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