c++ - Passing an object to a function taking a reference, an interview test -
i had interesting (or stupid) interview question. well, know code below not compile, not give answer on how modify class c make code compile. told answers test(c(1)); or void test(c c) unacceptable. can me? here's question: q11. following code compile? if not, make changes want class c in order code compile. class c { public: c(int i) {} ~c() {} }; void test(c &c) { } int main(int, char*) { test(1); return 0; } the code not compile. there no way make compile changing class c first because signature main wrong (char* never type of second argument). but if signature of main correct test(1); wants implicitly create temporary object of c , pass test . however, cannot bind temporary non-const reference, , can't see way change class c create implicit temporary can bind parameter test . edit: closest i've come putting friend void test(int i) { } c . compile sun's cc compiler fails compile g++ 4.4, 4.5, or 4.8 ideone. edi
