#include <iostream>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
using namespace std;

int createZombie() {
    if (rand() % 67 < 10)
        return 11;

    else
        return rand() % 10 + 1;
}

int main() {
    srand(time(NULL));
    char enter;

    // game stats
    int playerAlive = true;
    int playerSkill = 9;
    int playerScore = 1;
    string playerName = "";
    int zombieCount = 0;
    int zombiesKilled = 0;

    // title
    cout << "Welcome to Zombie War." << endl << "Press [ENTER] to start.";
    cin.get();

    // player name
    cout << "Please enter your name: ";
    cin >> playerName;

    // ask how many zombies
    cout << "How many zombies do you wish to fight? ";
    cin >> zombieCount;

    cout << "Get ready to fight for your life, " << playerName << "!" << endl;

    // main game loop
    while (playerAlive && zombiesKilled < zombieCount) {
        // create a random zombie
        int zombieSkill = createZombie();

        // battle sequence
        if (zombieSkill > 10) {
            cout << endl << "Here comes a huge zombie!" << endl;
        }
        else {
            cout << endl << "Here comes zombie " << zombiesKilled + 1 << endl;
        }

        cout << "Fighting..." << endl;
        sleep(2);

        // zombie killed the player
        if (playerSkill < zombieSkill) {
            playerAlive = false;
            cout << "You have died." << endl;
        }

        // player killed the zombie
        else {
            if (playerSkill - zombieSkill > 7) {
                cout << "You wasted the zombie!" << endl;
                playerScore = playerScore * 2;
            }

            else if (playerSkill - zombieSkill > 5) {
                cout << "You decapitated the zombie!" << endl;
                playerScore = playerScore * 2;
            }

            else if (playerSkill - zombieSkill > 0) {
                cout << "You killed the zombie!" << endl;
                playerScore = playerScore * 2;
            }

            else {
                cout << "You killed the zombie, but suffered injuries." << endl;
            }

            zombiesKilled++;
        }

        cout << endl;
        sleep(1);
    }

    // end game
    if (zombiesKilled == zombieCount) {
        // victory
        cout << "You have survived the onslaught!" << endl;
    }
    else {
        // lost
        cout << "You did not survive the zombie war." << endl;
    }

    cout << "Zombies killed: " << zombiesKilled << endl;
    cout << "Final score: " << playerScore << endl << endl;
}
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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
}