fork download

copy

#include <iostream>
#include <string>
 
using namespace std;
 
template <typename T> T square(T v) { return v*v; }
int f(int v) { return square(v); }
double f(double v) { return square(v); }
 
class Shit
{
 
};
 
int main()
{
 
    cout << f(4) << endl;
    cout << f(5.7) << endl;
 
    Shit s;
    cout << f(s) << endl;
 
    return 0;
}
 

prog.cpp: In function ‘int main()’:
prog.cpp:22:16: error: no matching function for call to ‘f(Shit&)’
     cout << f(s) << endl;
                ^
prog.cpp:22:16: note: candidates are:
prog.cpp:7:5: note: int f(int)
 int f(int v) { return square(v); }
     ^
prog.cpp:7:5: note:   no known conversion for argument 1 from ‘Shit’ to ‘int’
prog.cpp:8:8: note: double f(double)
 double f(double v) { return square(v); }
        ^
prog.cpp:8:8: note:   no known conversion for argument 1 from ‘Shit’ to ‘double’

Standard output is empty