Can you return 2 values in C++?
A C++ function can return only one value. However, you can return multiple values by wrapping them in a class or struct.
How can I return two objects in C++?
We can return more than one values from a function by using the method called “call by address”, or “call by reference”. In the invoker function we will use two variables to store the results, and the function will take pointer type data. So we have to pass the address of the data.
Can you return a reference in C++?
A C++ function can return a reference in a similar way as it returns a pointer. When returning a reference, be careful that the object being referred to does not go out of scope. But you can always return a reference on a static variable.
How can I return 2 values in return?
We can use following solutions to return multiple values.
- If all returned elements are of same type.
- If returned elements are of different types.
- Using Pair (If there are only two returned values) We can use Pair in Java to return two values.
- If there are more than two returned values.
- Returning list of Object Class.
Can we return 2 values from a function in C?
In C or C++, we cannot return multiple values from a function directly. We can return more than one values from a function by using the method called “call by address”, or “call by reference”.
Can you return a struct in C++?
You can return anything*, so it is perfectly legal to return a struct. However, you probably would not want to return a struct here, because it would be difficult/impossible to put that struct into the linked list. It really makes more sense to return a pointer.
Can you return an object in C++?
In C++ we can pass class’s objects as arguments and also return them from a function the same way we pass and return other variables. No special keyword or header file is required to do so.
What is return by address in C++?
Returning by address involves returning the address of a variable to the caller. This works because dynamically allocated memory is not destroyed at the end of the block in which it is allocated, so that memory will still exist when the address is returned back to the caller.
Can a method return two values?
7 Answers. You can’t return two values. However, you can return a single value that is a struct that contains two values. You can return only one thing from a function.
How are pairs compared in C++?
Comparison (==) operator with pair : For given two pairs say pair1 and pair2, the comparison operator compares the first value and second value of those two pairs i.e. if pair1. first is equal to pair2. first or not AND if pair1. second is equal to pair2.
How do you make a set of pairs in C++?
Sets of pairs in C++ Pair is defined under header and is used to couple together two pair values. The pair can have values of different or same type. The class has member functions first() and second() to individually access the values in a pair. The order of pair elements is fixed (first, second).