enum - get key from char value

[Jan Spatina]

Hello,
I have this type:

enum days{sun = 1, mon, tue, wed, thu, fri, sat};

and I have char in which is stored a name of the day:

char* day = "wed";

How can I recieve number of the day?
I tried something like:

int number = days(*day);
cout<<number;

but this won't work :(
thanks

[bluesteel]

Hello,
I have this type:

enum days{sun = 1, mon, tue, wed, thu, fri, sat};

and I have char in which is stored a name of the day:

char* day = "wed";

How can I recieve number of the day?
I tried something like:

int number = days(*day);
cout<<number;

but this won't work :(


thanks

could you be more accurate? What problems do you have? Does it compile?? What errors does it return???

[Jan Spatina]

Yes, let's make it simplier:

I have only this:

int sun = 1;
int mon = 2;
int tue = 3;

char* day = "mon"; .. this might be given by user input during run of program

I want to print something like:

cout<<"number of "<<day<< " is: "<< ? - what here - ?

-thanks-

[AdrianH]

Yes, let's make it simplier:

I have only this:

int sun = 1;
int mon = 2;
int tue = 3;

char* day = "mon"; .. this might be given by user input during run of program

I want to print something like:

cout<<"number of "<<day<< " is: "<< ? - what here - ?

-thanks-

There are a few ways you could do this, two of which would be to either make a class, or make a function. The latter is probably the easist and the former overkill, but then again the latter may not be sufficent and the former may be the right route. It all depends on what you are doing and why.


Adrian

[Jan Spatina]

There are a few ways you could do this, two of which would be to either make a class, or make a function. The latter is probably the easist and the former overkill, but then again the latter may not be sufficent and the former may be the right route. It all depends on what you are doing and why.


Adrian

Any examples?

thanks

[Ganon11]

Use a switch structure. If the first letter of the user's input is m, then the day is monday. If the first letter is w, then the day is wednesday. If the first letter is t, then it is either tuesday or thursday. If you embed this switch inside a function, it will make your code much easier to read.

[gpraghuram]

HI,
If you are using C++,try this.

 int get_day_of_Week(string _day)
{
  map<string,int> day_map;
  day_map["sun"]=1;day_map["mon"]=2;...day_map["sat"]=7;
  return day_map[_day];
}
int main()
{
  cout<<get the input in string;
  cout<<get_day_of_Week(day);
}

I have put only a pseudocode.
If needed i can add more info.
Thanks
Raghuram

[Jan Spatina]

HI,
If you are using C++,try this.

 int get_day_of_Week(string _day)
{
  map<string,int> day_map;
  day_map["sun"]=1;day_map["mon"]=2;...day_map["sat"]=7;
  return day_map[_day];
}
int main()
{
  cout<<get the input in string;
  cout<<get_day_of_Week(day);
}

I have put only a pseudocode.
If needed i can add more info.
Thanks
Raghuram

Thanks guys, that helped.
jan