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++.
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.
ch1 is blank ch2 is not blank
ch1 is not blank ch2 is blank
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