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iswblank() function in C++ STL
The iswblank () function in C++ is used to check if the given wide character is blank not. It is present in “ctype.h” header file in C language and “cctype” header file in C++ Standard template library (STL).
Syntax of iswblank is as follows
int iswblank(wint_t ch)
Return Type − returns non zero value if it contains blank spaces and value 0 if it doesn’t.
Parameters − ch − This is the character to be checked.
Example
Input − string str = “I Love Myself”
Output − total number of spaces is − 2
Input − string str = “Myself”
Output − total number of spaces is − 0
Approach used in the below program is as follows −
Input the string to check whether it contains spaces or not.
Call the function iswblank() and pass the given string to the function as a parameter for the final result.
Catch the non-zero integer value in a variable to print the final result.
Example
#include <ctype.h>
#include <iostream>
using namespace std;
int main(){
setlocale(LC_ALL, "en_US.UTF-8");
wchar_t str[] = L"\u0757\u077c\u0020\u00c5\u00d5\u00dd\u0009\u00a5";
int count = 0;
for (int i=0; i<wcslen(str); i++) {
if (iswblank(str[i]))
count ++;
}
cout << L"Number of blank characters in \"" << str << "\" = " << count;
return 0;
}Output
IF we run the above code it will generate the following output −
Number of blank characters in "ݼݗ ÅÕÝ¥" = 2
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