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About sponsors(Japanese)

created by

anonymous

1 minute ago

​x
    double result = SellAt(st.getName());
 
#include <string>
using std::string;
​
struct Station {
    string name;
    string& getName() { return name; }
};
​
struct Profit {
    double SellAt(string& stName);
    double SellAt(Station& st);
};
​
double Profit::SellAt(string& stName)
{
    //do stuff
}
​
#if 0
// Works as intended
double Profit::SellAt(Station& st)
{
    string stName = st.getName();
    return SellAt(stName);
}
​
#elif 1
// Compiler error

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$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-10.1.0/include -std=gnu++2a

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#permlink

Code

Start

prog.cc: In member function 'double Profit::SellAt(std::string&)':
prog.cc:17:1: warning: no return statement in function returning non-void [-Wreturn-type]
   17 | }
      | ^
prog.cc:14:31: warning: unused parameter 'stName' [-Wunused-parameter]
   14 | double Profit::SellAt(string& stName)
      |                       ~~~~~~~~^~~~~~

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