#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ctime>
#include <cctype>

using namespace std;

void userGuess(char guess);

int main() {
	//setup
	const int MAX_WRONG = 8;

	vector<string> words;
	words.push_back("GUESS");
	words.push_back("HANGMAN");
	words.push_back("DIFFICULT");

	srand(time(0));
	random_shuffle(words.begin(), words.end());

	const string THE_WORD = words[0];
	int wrong = 0;
	string soFar(THE_WORD.size(), '-');
	string used = "";


	cout << "Welcome to the Hangman. Good luck!\n";

	while ((wrong < MAX_WRONG) && (soFar != THE_WORD)) {
		cout << "\n\nYou have " << (MAX_WRONG - wrong);
		cout << " incorrect guesses left. \n";
		cout << "\nYou've used the following letters:\n" << used << endl;
		cout << "\nSo far, the word is:\n" << soFar << endl;

		cout << "\n\nEnter your guess: ";
		userGuess(guess);

		while (used.find(guess) != string::npos) {
			cout << "\nYou've already guessed " << guess << endl;
			cout << "Enter your guess: ";
			cin >> guess;
			guess = toupper(guess);
		}

		used += guess;

		if (THE_WORD.find(guess) != string::npos) {
			cout << "tHAT'S RIGHT! " << guess << " is in the word.\n";

			for (int i = 0; i < THE_WORD.length(); i++) {
				if (THE_WORD[i] == guess) {
					soFar[i] = guess;
				}
			}
		}
		else {
			cout << "Sorry, " << guess << " isn't in the word.\n";
				++wrong;
		}
	}
	if (wrong == MAX_WRONG) {
		cout << "\nYou've been hanged!";
	}
	else {
		cout << "You guessed it!";
	}
	cout << "\nThe word was " << THE_WORD << endl;
	return 0;
}

void user_guess(char guess) {
	cin >> guess;
	guess = toupper(guess);
}

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}