c++ - Invalid initialization of non-const reference of type -

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in following code, i'm not able pass temporary object argument printage function:

struct person {   int age;   person(int _age): age(_age) {} };  void printage(person &person) {    cout << "age: " << person.age << endl; }  int main () {   person p(50);   printage(person(50));  // fails!   printage(p);   return 0; }

the error is: 

error: invalid initialization of non-const reference of type ‘person&’ rvalue of type ‘person’

i realize passing lvalue function expecting rvalue... there way convert lvalue rvalue using std::move or something? tried taking constant parameter, not seem work.

simply make print function take argument const&. logically right doesn't modify argument.

void printage(const person &person) {    cout << "age: " << person.age << endl; }

the actual problem other way around. passing temporary(rvalue) function expects lvalue.


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