Causes the enclosingfor,range-for,while ordo-while loop orswitch statement to terminate.
Used when it is otherwise awkward to terminate the loop using the condition expression and conditional statements.
[edit]Explanation
Appears only within thestatement of a loop body (while,do-while,for) or within thestatement of aswitch.After this statement the control is transferred to the statement immediately following the enclosing loop or switch. As with any block exit, all automatic storage objects declared in enclosing compound statement or in thecondition of a loop/switch are destroyed, in reverse order of construction, before the execution of the first line following the enclosing loop.
A break statement cannot be used to break out of multiple nested loops. Thegoto statement may be used for this purpose.
[edit]Keywords
break
[edit]Example
#include <iostream> int main(){int i=2;switch(i){case1:std::cout<<"1";// <---- maybe warning: fall throughcase2:std::cout<<"2";// execution starts at this case label (+warning)case3:std::cout<<"3";// <---- maybe warning: fall throughcase4:// <---- maybe warning: fall throughcase5:std::cout<<"45";//break;// execution of subsequent statements is terminatedcase6:std::cout<<"6";}std::cout<<'\n'; for(char c='a'; c<'c'; c++){for(int i=0; i<5; i++)// only this loop is affected by break{//if(i==2)//break;//std::cout<< c<< i<<' ';//}}std::cout<<'\n';}Possible output:
[edit]See also
| indicates that the fall through from the previous case label is intentional and should not be diagnosed by a compiler that warns on fall-through
(attribute specifier)[edit] |
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