// C++ code to print a HEART Shape
#include<iostream>
using namespace std;

int main()
{
	
	int a, b, size ;
  cin>>size;


	for (a = size/2; a <= size; a = a+2)
	{
		// FOR SPACE BEFORE PEAK-1 : PART 1
		for (b = 1; b < size-a; b = b+2)		
			cout<<" ";

		// FOR PRINTING PEAK-1 : PART 2
		for (b = 1; b <= a; b++)
			cout<<"*";
	
		// FOR SPACE B/W PEAK-1 AND PEAK-2 : PART 3
		for (b = 1; b <= size-a; b++)
			cout<<" ";
		
		// FOR PRINTING PEAK-2 : PART 4
		for (b = 1; b <= a-1; b++)
			cout<<"*";

		cout<<endl;
	}

	/*FOR THE BASE OF HEART ie. THE INVERTED TRIANGLE */

	for (a = size; a >= 0; a--)
	{
		// FOR SPACE BEFORE THE INVERTED TRIANGLE : PART 5
		for (b = a; b < size; b++)
			cout<<" ";

		// FOR PRINTING THE BASE OF TRIANGLE : PART 6
		for (b = 1; b <= ((a * 2) - 1); b++)
			cout<<"*";

		cout<<endl;
	}
}
// This code is contributed by Kunal Mali.
by

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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
}