 // C++ program for the above approach

#include <GL\glut.h>
#include <iostream>
#include <windows.h>
using namespace std;

// Function to initialize the drivers
void myInit(void)
{
	// Clear all the screen color
	glClearColor(1.0, 0.5, 0.0, 1.0);

	// Sets background color to orang
	glMatrixMode(GL_PROJECTION);

	glLoadIdentity();

	// Specify the display area
	gluOrtho2D(0.0, 400.0, 0.0, 400.0);
}

// Function to display the Hut like
// structure on the console
void myDisplay(void)
{
	// Clear the screen buffer
	glClear(GL_COLOR_BUFFER_BIT);

	glPointSize(4.0);

	// Rectangular part of hut
	glColor3f(0.5f, 0.5f, 0.5f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(40, 40);
	glVertex2i(320, 40);

	glVertex2i(40, 200);
	glVertex2i(320, 200);

	glVertex2i(40, 200);
	glVertex2i(40, 40);

	glVertex2i(320, 200);
	glVertex2i(320, 40);

	glEnd();

	// Right Window Update
	glColor3f(1.0f, 0.0f, 0.0f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(220, 60);
	glVertex2i(300, 60);

	glVertex2i(220, 150);
	glVertex2i(300, 150);

	glVertex2i(220, 60);
	glVertex2i(220, 150);

	glVertex2i(300, 150);
	glVertex2i(300, 60);

	glEnd();

	// Right Window Update part 2
	glColor3f(1.0f, 0.0f, 0.0f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(220, 170);
	glVertex2i(300, 170);

	glVertex2i(220, 190);
	glVertex2i(300, 190);

	glVertex2i(220, 170);
	glVertex2i(220, 190);

	glVertex2i(300, 190);
	glVertex2i(300, 170);

	glEnd();

	// Door
	glColor3f(0.60f, 0.42f, 0.16f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(130, 40);
	glVertex2i(130, 160);

	glVertex2i(130, 160);
	glVertex2i(180, 160);

	glVertex2i(180, 100);
	glVertex2i(180, 40);

	glVertex2i(120, 40);
	glVertex2i(170, 40);

	glEnd();

	// Create Door Part 2
	glColor3f(0.60f, 0.42f, 0.16f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(130, 170);
	glVertex2i(130, 180);

	glVertex2i(130, 180);
	glVertex2i(180, 180);

	glVertex2i(180, 170);
	glVertex2i(180, 180);

	glVertex2i(130, 170);
	glVertex2i(180, 170);

	glEnd();

	// Hut's top triangle part
	glColor3f(1.0f, 0.0f, 1.0f);

	// Begin the polygon
	glBegin(GL_POLYGON);

	// Create the polygon
	glVertex2i(10, 200);
	glVertex2i(340, 200);

	glVertex2i(200, 390);

	glVertex2i(10, 200);
	glVertex2i(200, 390);

	glEnd();

	// Sends all output to display
	glFlush();
}

// Driver Code
int main(int argc, char** argv)
{
	// Initialize the init function
	glutInit(&argc, argv);

	// Initialize the toolkit;
	glutInitDisplayMode(
		GLUT_SINGLE | GLUT_RGB);

	// Sets the display mode and
	// specify the colour scheme
	glutInitWindowSize(1200, 740);

	// Specify the window size
	glutInitWindowPosition(0, 0);

	// Sets the starting position
	// for the window
	glutCreateWindow("Basic hut like"
					" structure");

	// Creates the window and
	// sets the title
	glutDisplayFunc(myDisplay);
	myInit();

	// Additional initializations
	glutMainLoop();

	// Go into a loop until event
	// occurs
	return 0;
}

created 3 years ago

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
}