Question

Write a program in C++ that will read a sentence from the keyboard, terminated with a period '.' and write the sentence to an output file with all white spaces replaced by the symbol '*'. You may use the “isspace()” function of the “cctype” library to carry out the determination of whether the character read is 'white space'. Show any #include files you may need. Make sure to handle conditions where the file may be missing so your program does not crash.

Answer 1

#include <iostream>
#include <fstream>
#include <string>
#include <cctype>

using namespace std;

int main() {
    string fileName;
    cout << "Enter file name to write to: ";
    cin >> fileName;
    ofstream out(fileName.c_str());
    cout << "Enter sentence: ";
    char ch;
    while (true) {
        cin.get(ch);
        if (ch == '.')
            break;
        if (isspace(ch)) {
            out << "*";
        } else {
            out << ch;
        }
    }
    out.close();
    return 0;
}