#include <iostream>
#include <GL/glut.h>

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

void display(){
		glClear(GL_COLOR_BUFFER_BIT);
	
	//EARS 
	glEnable(GL_LINE_STIPPLE);
		glLineWidth(2.0f);
		glLineStipple(1,0xAAAA);
		glColor3f(1.0f, 0.5f, 0.0f); //orange
		
	glBegin(GL_LINE_LOOP);
		glVertex2f(0, 0);
		glVertex2f(0.1,0);
		glVertex2f(0.05,0.2);
		glEnd();
		
	glBegin(GL_LINE_LOOP);
		glVertex2f(0.1, 0);
		glVertex2f(0.2,0);
		glVertex2f(0.15,0.2);
		glEnd();
		glFlush();
		glDisable(GL_LINE_STIPPLE);
		
	//FACE	
	glBegin(GL_QUADS); 
		glVertex2f(0.0, 0.0); // upper left, clockwise
		glColor4f(1.0f, 1.0f, 0.0f, 0.0f); // yellow
		glVertex2f(0.2,0); // UR
		glColor4f(1.0f, 1.0f, 0.0f, 0.0f); // yellow
		glVertex2f(0.2, -0.2); //LR
		glColor4f(1.0f, 1.0f, 0.0f, 0.0f); // yellow
		glVertex2f(0.0, -0.2); //LL
		glEnd();	
		glFlush();
		
	//EYES
	glPointSize(7.0);
	glBegin(GL_POINTS);
		glColor4f(0.0f, 0.0f, 0.0f, 0.0f); // black
		glVertex2f(0.05, -0.1);
		glVertex2f(0.15, -0.1);
		glEnd();
		glFlush();
		
	//NOSE
	glBegin(GL_TRIANGLES);
		glVertex2f(0.05f,-0.1f);
		glVertex2f(0.05f,-0.1f);
		glVertex2f(0.05f,-0.05f);
		glEnd();
		glFlush();
			
	//MOUTH
	glBegin(GL_LINES);
	glColor4f(0.0f, 0.0f, 0.0f, 0.0f); // black
		glVertex2f(0.05, -0.16);
		glVertex2f(0.15, -0.16);
		glEnd();
		glFlush();
	
	//BODY
	
	glBegin(GL_POLYGON);
	glColor3f(1.0f, 1.0f, 1.0f);
		glVertex2f(0.25,-1.5);
		glVertex2f(0.75,-1.5);
		glVertex2f(0.0,-2.0);
		glVertex2f(1.0,-2.0);
		glVertex2f(0.0,-2.5);
		glVertex2f(1.0,-2.5);
		glEnd();
		glFlush();

		
	
}

int main(int argc, char** argv) {
	glutInit(&argc,argv); 
	glutCreateWindow("Kelsey Lantano");
	glutDisplayFunc(display);
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glClearColor(1, 1, 1, 0);
	glutMainLoop();
	return 0;
}
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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
}