Really simple C++ noobie question

[WhiteMyth]

ok I"m fairly new to C++, been taking classes for a sememester. I can't figure out why this isn't working for me.
I have a function double CalcExchangeAmount(double , int );

and I want to pass the result of it to another variable also of type double. I keep getting a compile error: type 'double' unexpected.

I don't understand why I can't assign the double result of the function to another double variable, all my other functions doing similar things with ints are working fine.

so thanks if I can get some idea on why it doesn't work.

 

[EagleKeeper]

Post code

 

[dude8604]

You have to use variables. ie: CalcExchangeAmount(double variable, int variable);

 

[WhiteMyth]

Ok well here's the code, ya I did have variables in there.

result = double CalcExchangeAmount(double dollars, int currencySelection);

and the function is :

double CalcExchangeAmount(double dollars, int currencySelection)
{
double result; // result of the calculation
double multiplier;

cout << "CalcExchangeAmount Fnc\n\n";


switch(currencySelection) /// this is going to set the multiplier to use in the calculation.
{
I cut out the other stuff not needed in the switch statement. but assuming 9 is enered, the multiplier will equal the global constant US_DOLLARS

case 9: multiplier = US_DOLLARS;
break;


default : cout <<"Wrong Data Type\n";
break;

}

result = dollars*multiplier;
return result; // result should be stored in result in main, but it won't work 🙁
}


edit: miscopied

 

[EagleKeeper]

result = double CalcExchangeAmount(double dollars, int currencySelection);

The highlighted double is not needed. that is what is causing your problem

main
{
double result;

// code

result = CalcExchangeAmount(double dollars, int currencySelection);
}


or

main
{
double result = CalcExchangeAmount(double dollars, int currencySelection);
}

 

[DaveSimmons]

result = double CalcExchangeAmount ( double dollars, int currencySelection ) ;

You should only list the variable types when defining the function, not when you call it.
result = CalcExchangeAmount ( dollars, currencySelection ) ;

 

[WhiteMyth]

aaah yes I got it now, I didn't need (double dollars,... just (dollars,...ect
thanks for helpin out, learn somethin new all the time 🙂