How to assign string to enum using C++98?

Question

I have declared an enum and a string

string SS;

enum CS {AA, BB, CC, DD};

and I want to create a variable named CN of type CS and assign the SS to enum CS.

I looked it up in the internet, most solutions are for C++11 and above. I tried to use map, but it would not work.

map<string, enum> CN;
  CN["AA"]=0;
  CN["BB"]=1;
  CN["CC"]=2;
  CN["DD"]=3;

Can anyone give me some suggestions? How do I create CS as a type enum CS? I will really appreciate it!

Answer 1

Your use of map is nearly right, so long as the values are initialised in function scope.

I.e. this is OK

std::map<std::string, CS> CN;

int main() {
    CN["AA"]=AA;
    CN["BB"]=BB;
    CN["CC"]=CC;
    CN["DD"]=DD;

    // use CN
}

However this isn't

std::map<std::string, CS> CN;
CN["AA"]=AA; // can't have expressions at namespace scope
CN["BB"]=BB;
CN["CC"]=CC;
CN["DD"]=DD;

int main() {
    // try to use CN
}