Having a compile error. Stray 302 and 240 program

Question

I was wondering what I'm doing wrong here. This is my first time using file I/O and I can't seem to figure out what’s going on. It's supposed to take a paragraph or some words from the input file and output the results onto another file and on the console.

Here’s what I've got at the moment.

// Include necessary header files

#include <iostream>
#include <fstream>
#include <string>
#include <sstream>

// Declare the namespace
using namespace std;

// Define the main() function

int main()
{
    // Initialize the variables
    int tot_chars=0,tot_nonwhite=0,tot_letters=0;

    // Declare the variables
    string str;
    ifstream input;
    ofstream output;

    // Open the file
    input.open("inputfile.txt");

    // Check the condition
    if(input.fail())
    {
        // Print the statement
        cout << "input file did not open please check it\n";

        // Return one
        return 1;
    }

    // Open the output file
    output.open("outputfile.txt");

    // Get the input
    getline(input, str);

    // Pass the input as an argument
    while(input)
    {
        // For loop to iterate the sentence
        for(int i=0; str[i]!='\0'; i++)
        {
            /* Increment the value of the variable tot_chars by 1 */

            tot_chars++;

            // Check the condition
            if(isalpha(str[i]))

                /* Increment the value of the variable tot_letters by 1 */
                tot_letters++;

                // Check the condition
                if(!isspace(str[i]))

                    /* Increment the value of the variable tot_nonwhite by 1 */
                    tot_nonwhite++;
            }

            /* Increment the value of the variable tot_nonwhite by 1 */
            tot_nonwhite++;

            // Get the input
            getline(input, str);
    }

    // Print the output to the output file
    output << "Total Characters: " << tot_chars << endl;

    // Print the output to the output file
    output << "Total non-whitespace characters: " << tot_nonwhite << endl;

    // Print the output to the output file
    output << "Total letters: " << tot_letters << endl;

    // Print the output on the screen
    cout << "Total Characters: " << tot_chars << endl;

    // Print the output on the screen
    cout << "Total non-whitespace characters: " << tot_nonwhite << endl;

    // Print the output on the screen
    cout << "Total letters: " << tot_letters << endl;

    // Close the output file
    output.close();

    // Close the input file
    input.close();

    // Return zero
    return 0;
}