is thaere a cls in c++?

[Koromaru]

ok im making a program to calculat high values and have user in put for my first disign but i want to clear the terminall on the menu and system("cls") dont work
here is my code

  #include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;
int showfar =0;
int addnext =0;
int hexin= 0;
int binaryin= 0;
int pause= 0;

void eng(){
int inputa = 0;

topeng:
for(int cls = 0; cls < 310; cls ++)
   std::cout << "\n";
cout << "hello and welcome to the calculator menu" << endl;
cout << "number so far:" << showfar << endl;
cout << "1- for adding " << endl;
cout << "2- for number to hex" << endl;
cout << "3- for number to binary max 1023" << endl;
cout << "4- to exit" << endl;

std::cin >> inputa;

if(inputa== 1){goto simple1;}
if(inputa== 2){goto hexindex;}
if(inputa== 3){goto binaryindex;}
if(inputa== 4){goto exit;}
simple1:
// this is the adding section--------------------------------------------------------------------------
agen1:
cout << showfar << endl;
cout << "add 0 to go back" << endl;
cout << "(adding) next num plz" << endl;
cin >> addnext;
if (addnext == 0){goto topeng;}
showfar=showfar+addnext;
goto agen1;
hexindex:
agen2:

    cout << "enter num to turn into hex" << endl;
    cout << "enter 0 to go back" << endl;
    cin >> hexin;
    if (hexin == 0){goto topeng;}
  std::cout << std::hex << hexin << '\n';
goto agen2;
binaryindex:
    agen3:
        long dec,rem,i,sum;
        i=1;
        sum=0;
    cout<<"Enter the num to be converted:";
    cout<<"enter 0 to go back"<<endl;
    cin>>dec;
    if(dec== 0){goto topeng;}
    do
    {
        rem=dec%2;
        sum=sum + (i*rem);
        dec=dec/2;
        i=i*10;
    }while(dec>0);
    cout<<"The binary of the given number is:"<<sum<<endl;
    cin>>pause;
    if(pause == 0){goto topeng;}
goto agen3;
exit:
cout << "goodbye" << endl;
}

int main()
{

    int lang = 0;
    cout << "1-eng" << endl;
    cout << "2-deu" << endl;
    cin >> lang;
    if (lang== 1){
    eng();
    return 0;
    }
    return 0;
}

if you can help that woaled be nice

[TarikNeaj]

is thaere a cls in c++?

C++ Doesn't know the concept of a console, so you can't using pure C++.

http://bfy.tw/4JUA

[dhayden]

With any luck, your console will recognize the ANSI escape sequences:
http://ascii-table.com/ansi-escape-sequences-vt-100.php

You can use one sequence to clear the screen and another to move the cursor to the top left:

#include<iostream>

// In the strings below, \033 is the escape character.
constexpr char clearScreen[] = "\033[2J";
constexpr char topLeft[] = "\033[;H";

int
main(void)
{
    std::cout << clearScreen << topLeft;
    return 0;
}