main.cpp:8:7: warning: implicit conversion from 'double' to 
'int' changes value from 12.34 to 12 [-Wliteral-conversion]
    f(12.34);
    ~ ^~~~~
main.cpp:10:7: warning: implicit conversion turns floating-point 
number into integer: 'const double' to 'int' [-Wfloat-conversion]
    f(x);
    ~ ^
2 warnings generated.
12
12