/ C program to draw a moving car. This
// program run in gcc compiler having
// graphics.h library installed
#include <graphics.h>
#include <stdio.h>

// Function to draw moving car
void draw_moving_car(void) {

	int i, j = 0, gd = DETECT, gm;

	// Passed three arguments to initgraph
	// function to initialize graphics mode
	initgraph(&gd, &gm, "");

	for (i = 0; i <= 420; i = i + 10) {

		// Set color of car as red
		setcolor(RED);

		// These lines for bonnet and 
		// body of car
		line(0 + i, 300, 210 + i, 300);
		line(50 + i, 300, 75 + i, 270);
		line(75 + i, 270, 150 + i, 270);
		line(150 + i, 270, 165 + i, 300);
		line(0 + i, 300, 0 + i, 330);
		line(210 + i, 300, 210 + i, 330);

		// For left wheel of car
		circle(65 + i, 330, 15);
		circle(65 + i, 330, 2);

		// For right wheel of car
		circle(145 + i, 330, 15);
		circle(145 + i, 330, 2);

		// Line left of left wheel
		line(0 + i, 330, 50 + i, 330);

		// Line middle of both wheel
		line(80 + i, 330, 130 + i, 330);

		// Line right of right wheel
		line(210 + i, 330, 160 + i, 330);

		delay(100);

		// To erase previous drawn car
		// use cleardevice() function
		cleardevice();
	}

	getch();

	closegraph();
}

// Driver code
int main()
{
	draw_moving_car();

	return 0;
}

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#include <iostream>
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using namespace std;

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    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
}