#include <SFML/Graphics.hpp>
#include <time.h>
using namespace sf;

struct point
{ int x,y;};

int main()
{
    srand(time(0));

    RenderWindow app(VideoMode(400, 533), "Doodle Game!");
    app.setFramerateLimit(60);

    Texture t1,t2,t3;
    t1.loadFromFile("images/background.png");
    t2.loadFromFile("images/platform.png");
    t3.loadFromFile("images/doodle.png");

    Sprite sBackground(t1), sPlat(t2), sPers(t3);

    point plat[20];

    for (int i=0;i<10;i++)
      {
       plat[i].x=rand()%400;
       plat[i].y=rand()%533;
      }

    int x=100,y=100,h=200;
    float dx=0,dy=0;

    while (app.isOpen())
    {
        Event e;
        while (app.pollEvent(e))
        {
            if (e.type == Event::Closed)
                app.close();
        }

    if (Keyboard::isKeyPressed(Keyboard::Right)) x+=3;
    if (Keyboard::isKeyPressed(Keyboard::Left)) x-=3;

    dy+=0.2;
    y+=dy;
    if (y>500)  dy=-10;

    if (y<h)
    for (int i=0;i<10;i++)
    {
      y=h;
      plat[i].y=plat[i].y-dy;
      if (plat[i].y>533) {plat[i].y=0; plat[i].x=rand()%400;}
    }

    for (int i=0;i<10;i++)
     if ((x+50>plat[i].x) && (x+20<plat[i].x+68)
      && (y+70>plat[i].y) && (y+70<plat[i].y+14) && (dy>0))  dy=-10;

    sPers.setPosition(x,y);

    app.draw(sBackground);
    app.draw(sPers);
    for (int i=0;i<10;i++)
    {
    sPlat.setPosition(plat[i].x,plat[i].y);
    app.draw(sPlat);
    }

    app.display();
}

    return 0;
}

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
}