دستور break در ++C

از این دستور برای متوقف کردن اجرای حلقه استفاده میشه.

#include <iostream>
using namespace std;

//---------------------------------------------------------------------------

int main(int argc, char* argv[])
{
    char Letter = 'd';

    while( Letter <= 'n' )
    {
        cout << "Letter " << Letter << endl;
        if( Letter == 'k' )
            break;
        Letter++;
    }

    return 0;
}

The break statement can be used in a do�while loop in the same way.

In a for statement, the break can stop the counting when a particular condition becomes true.
For example, the following program is supposed to count from 0 to 12,
but the programmer wants it to stop as soon as it detects the number 5:

#include <iostream>
using namespace std;

//---------------------------------------------------------------------------

int main(int argc, char* argv[])
{
    for(int Count = 0; Count <= 12; ++Count)
    {
        cout << "Count " << Count << endl;
        if( Count == 5 )
            break;
    }

    return 0;
}

The break statement is typically used to handle the cases in a switch statement where you usually may want the program to ignore invalid cases.

Consider a program used to request a number from 1 to 3, a better version that involves a break in each case would allow the switch to stop once the right case is found. Here is a working version of that program:

#include <iostream>
using namespace std;

//---------------------------------------------------------------------------

int main(int argc, char* argv[])
{
    int Number;

    cout << "Type a number between 1 and 3: ";
    cin >> Number;

    switch (Number)
    {
    case 1:
        cout << "\nYou typed 1.";
        break;
    case 2:
        cout << "\nYou typed 2.";
        break;
    case 3:
        cout << "\nYou typed 3.";
        break;
    default:
        cout << endl << Number << " is out of the requested range.";
    }

    return 0;
}