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# break statement

From cppreference.com
< cpp‎ | language

Causes the enclosing for, range-for, while or do-while loop or switch statement to terminate.

Used when it is otherwise awkward to terminate the loop using the condition expression and conditional statements.

### [edit] Syntax

attr(optional) `break` `;` |  |

### [edit] Explanation

After this statement the control is transferred to the statement immediately following the enclosing loop. All automatic storage objects declared in enclosing loop are destroyed before the execution of the first line following the enclosing loop.

### [edit] Keywords

`break`

### [edit] Example

Run this code

    #include <iostream>

    int main()
    {
        int i = 2;
        switch (i) {
            case 1: std::cout << "1";
            case 2: std::cout << "2";   //execution starts at this case label
            case 3: std::cout << "3";
            case 4:
            case 5: std::cout << "45";
                    break;              //execution of subsequent statements is terminated
            case 6: std::cout << "6";
        }

        std::cout << '\n';

        for (int j = 0; j < 2; j++) {
            for (int k = 0; k < 5; k++) {         //only this loop is affected by break
                if (k == 2) break;
                std::cout << j << k << " ";
            }
        }
    }

Output:

    2345
    00 01 10 11

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