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isblank() in C/C++
The function isblank() is used to check that the passed character is blank or not. It is basically a space character and it also considers tab character(\t). This function is declared in “ctype.h” header file in C language and “cctype”” header file in C++ language.
Here is the syntax of isblank() in C++ language,
int isblank(int char);
Here is an example of isblank() in C++ language,
Example
#include <ctype.h>
#include <iostream>
using namespace std;
int main() {
string s = "The space between words. ";
int i = 0;
int count = 0;
while(s[i]) {
char c = s[i++];
if (isblank(c)) {
count++;
}
}
cout << "\nNumber of blanks in sentence : " << count << endl;
return 0;
}Output
Number of blanks in sentence : 4
In the above program, a string is passed in variable s. The function isblank() is used to check the spaces or blanks in the passed string as shown in the following code snippet.
string s = "The space between words. ";
int i = 0;
int count = 0;
while(s[i]) {
char c = s[i++];
if (isblank(c)) {
count++;
}
}
Updated on: 26-Jun-2020
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