Hi, I've just started using MS VC++ 2010 express and I have a problem which when using Dev C++ I've never had...
VC++ doesn't allow me to allocate elements for an array using a variable as a subscript, like this :
int maxElements = 10;
char myArray[maxElements];It says :
error C2057: expected constant expression
Is there a workaround for this? Am I better off using a different compiler such as Dev C++?
tnks
Dean
Jump to PostAny compiler will tell you that's wrong.
When you allocate an array statically(as oppose to dynamically) the size of the array _must_ be available at compile time. In your example, maxElements is a variable so the compiler has no idea if it's going to change at runtime.So you …
Any compiler will tell you that's wrong.
When you allocate an array statically(as oppose to dynamically) the size of the array _must_ be available at compile time. In your example, maxElements is a variable so the compiler has no idea if it's going to change at runtime.
So you have 2 options:
- allocate the array dynamically
- make maxElements a 'const int'
If you don't know how, ask ;)
lol, I've just tried it again on Dev C++ and again it compiled and executed as I wanted it to.
Anyway tnks for the suggestions....
lol, I've just tried it again on Dev C++ and again it compiled and executed as I wanted it to.
Anyway tnks for the suggestions....
dev c++ is old and bad compiler it is not standard-compliant you better off using vc++ 2010
follow the the advice the previous poster gave you you will write more efficient and standard compliant code :)
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