C++ Program to Count the Number of Whitespace Characters in a File

This C++ Program which counts the number of white-space characters in the file. The program creates an input file stream, reads a line on every iteration of a while loop, increments the count variable every time a white-space character (‘ ‘) or a tab-space character (‘\t’) is encountered and the count variable is printed on the screen.

Here is source code of the C++ program which counts the number of white-space characters in a file. The C++ program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C++ Program to Count the White-Spaced Characters in a File

```
 */
```
```
#include <iostream>
```
```
#include <fstream>
```
```
 
```
```
int main()
```
```
{
```
```
    int count = 0;
```
```
    std::string line;
```
```
    std::ifstream file("main.cpp");
```
```
 
```
```
    while (getline(file, line))
```
```
    {
```

        for (int i = 0; i < line.length(); i++)

```
        {
```

            if (line[i] == ' ' || line[i] == '\t')

```
                count++;
```
```
        }
```
```
    }
```

    std::cout << "Number of white-space characters"

              << " is " << count << "\n.";

```
    return 0;
```
```
}
```

$ g++ main.cpp
$ ./a.out
Number of white-space characters is 155.

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