QString as parameter in switch case

Indrajeet

Hi All

Is there any way to use QString as a parameter in switch case as shown below.
@
QString str;
switch(str)
{
case "A":
break;
case "B":
break;
}
@

dbzhang800

You can use an string as the condition of switch statement, as long as the string class provide an operator such as:

bq.
operator int() const

But, you cannot code something like this!!

bq.
case "A":

From ISO C++ 6.4:

bq.
The value of a condition that is an initialized declaration in a switch statement is the value of the declared variable if it has integral or enumeration type, or of that variable implicitly converted to integral or enumeration type otherwise.

From ISO C++ 6.4.2

bq.
Any statement within the switch statement can be labeled with one or more case labels as follows:
case constant-expression :
where the constant-expression shall be an integral constant.