My compiler is complaining that "Expression is not assignable" for the line of code handling the str.size function. I can't tell what I have wrong. Can someone help ? I'm passing a string into a function and trying to get the length of it.
int ValueString::value(string str)const
{
int length;
str.size() = length;
return length;
}
str.size() returns an R-value, which cannot be assigned to.
length is an L-value and can be assigned to.
You mean:
int ValueString::value(const string& str)const
{
int length;
length = str.size();
return length;
}
This could, of course, be simplified to:
int ValueString::value(const string& str) const
{
return str.size();
}
It could be simplified even further than that, perhaps...
The compiler message says it all. You can't assign to the result of the function call size(). I think you probably mean int length = str.size().
