#include <iostream>
#include <string>
using namespace std;


int main() {
  char E, D, N, K;
  int i, db_E=0, db_D=0, db_K=0, db_N=0;
  string txt;

  cout << "\n\nAdja meg a parancsszot: ";

  getline (cin, txt);//HIBA!  EDEEEKKK esetén
  cout <<"\nParancsszo: "<< txt << endl;
  cout << "\nA parancsszo hossza: " << txt.length() << endl;
  cout << "\nDarabszamok: " << endl;

  for (i=0;i<txt.length();i++)
    {
    if (int(txt[i])==int('E'))
    db_E++;
    if (int(txt[i])==int('D'))
    db_D++;
    if (int(txt[i])==int('K'))
    db_K++;
    if (int(txt[i])==int('N'))
    db_N++;
    }

 cout << "E: "<< db_E << endl;
 cout << "D: "<< db_D << endl;
 cout << "N: "<< db_N << endl;
 cout << "K: "<< db_K << endl;

if (db_E-db_D>0)  {db_E=db_E-db_D; db_D=0;}
if (db_E-db_D<0)  {db_D=db_D-db_E; db_E=0;}
if (db_E-db_D==0)  {db_E=0; db_D=0;}

if (db_K-db_N>0)  {db_K=db_K-db_N; db_N=0;}
if (db_K-db_N<0)  {db_N=db_N-db_K; db_K=0;}
if (db_K-db_N==0)  {db_K=0; db_N=0;}

 cout << "\n\nDarabszamok meghatarozasa: \n";
 cout << "K: " << db_K << endl;
 cout << "N: " << db_N << endl;
 cout << "E: " << db_E << endl;
 cout << "D: " << db_D << endl;

cout << "\nUj parancsszo:\t";
for (i=0;i<db_K;i++)
cout << "K";
for (i=0;i<db_N;i++)
cout << "N";
for (i=0;i<db_E;i++)
cout << "E";
for (i=0;i<db_D;i++)
cout << "D";

cout << "\n\n";

  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
}