Programming Forums > Application Development > C

gamerfelipe · Apr 14th, 2007, 10:16 AM

Okay. I am a relatively new programmer here. I was wondering about the switch statement. Is it possible to use test a string in the switch statement like this:

(Toggle Plain Text)

switch(choice)
{
     case 'House': ....
     case 'Car': ...
     case 'City': ...
}

Thanks

DaWei · Apr 14th, 2007, 10:33 AM

No. In C, the switch expression must be integral, and the case expression must be a constant expression that is integral. In C++ they must be integral or have a class type that has an unambiguous conversion to integral type.

Furthermore, there is no such thing as 'House'. Single quotes are used to indicate single characters, such a 'H'. Double quotes are used to indicate strings of characters, such as "House."

RGCaldas · Apr 14th, 2007, 10:44 AM

But you can use something like this

char string[][] = {{"House"},{"Car"},{"City"}};
int op;

op = [funtion to get option]
switch (op){
case 0: ... House
case 1: ... Car
case 2: ... City
}

Hope it helps

DaWei · Apr 14th, 2007, 10:56 AM

It just confuses me. Is House a variable that you haven't shown a definition for? It certainly isn't the same thing as "House".

RGCaldas · Apr 14th, 2007, 11:15 AM

House Car and City, would be the code He needs for each case.

gamerfelipe · Apr 14th, 2007, 11:20 AM

Well actually, house, car, and city aren't really anything. They're just examples

Thanks for the input

Apr 14th, 2007, 10:16 AM	#1
gamerfelipe Newbie Join Date: Jan 2007 Location: Hershey, the sweetest place on earth Posts: 19 Rep Power: 0	Switch statement and strings Okay. I am a relatively new programmer here. I was wondering about the switch statement. Is it possible to use test a string in the switch statement like this: (Toggle Plain Text) switch(choice) { case 'House': .... case 'Car': ... case 'City': ... } switch(choice) { case 'House': .... case 'Car': ... case 'City': ... } Thanks

Apr 14th, 2007, 10:33 AM	#2
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	No. In C, the switch expression must be integral, and the case expression must be a constant expression that is integral. In C++ they must be integral or have a class type that has an unambiguous conversion to integral type. Furthermore, there is no such thing as 'House'. Single quotes are used to indicate single characters, such a 'H'. Double quotes are used to indicate strings of characters, such as "House." __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Apr 14th, 2007, 10:56 AM	#4
DaWei Resident Grouch Join Date: Jun 2005 Posts: 6,453 Rep Power: 10	It just confuses me. Is House a variable that you haven't shown a definition for? It certainly isn't the same thing as "House". __________________ Abstraction doesn't make it impossible to write bad code; it makes it possible to write superior code. Contributor's Corner: Grumpy on C++ Exceptions DaWei on Pointers

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
.NET Database Application	ReggaetonKing	Other Programming Languages	10	Jan 18th, 2007 3:08 PM

Apr 14th, 2007, 10:44 AM	#3
RGCaldas Newbie Join Date: Nov 2006 Posts: 5 Rep Power: 0	But you can use something like this char string[][] = {{"House"},{"Car"},{"City"}}; int op; op = [funtion to get option] switch (op){ case 0: ... House case 1: ... Car case 2: ... City } Hope it helps

Apr 14th, 2007, 11:15 AM	#5
RGCaldas Newbie Join Date: Nov 2006 Posts: 5 Rep Power: 0	House Car and City, would be the code He needs for each case.

Apr 14th, 2007, 11:20 AM	#6
gamerfelipe Newbie Join Date: Jan 2007 Location: Hershey, the sweetest place on earth Posts: 19 Rep Power: 0	Well actually, house, car, and city aren't really anything. They're just examples Thanks for the input

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Programming Forums > Application Development > C

Switch statement and strings