How to return two values in c++

Can we return 2 values from a function 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.

How can I return two values?

We can use following solutions to return multiple values.

  1. If all returned elements are of same type.
  2. If returned elements are of different types.
  3. Using Pair (If there are only two returned values) We can use Pair in Java to return two values.
  4. If there are more than two returned values. …
  5. Returning list of Object Class.

How do you return a value from a function C++?

To return a value back to the caller, two things are needed.

  1. First, your function has to indicate what type of value will be returned. …
  2. Second, inside the function that will return a value, we use a return statement to indicate the specific value being returned to the caller. …
  3. Functions are not required to return a value.

Is it possible to return multiple values from a function?

Even though a function can return only one value but that value can be of pointer type. … If we want the function to return multiple values of same data types, we could return the pointer to array of that data types. We can also make the function return multiple values by using the arguments of the function.

Is it bad to have multiple return statements?

Multiple return statements in a method will cause your code not to be purely object-oriented. Here you’ll find an example where you can use a clean OOP approach instead of using multiple returns. … The answer may surprise you: In a pure object-oriented world, a method must have a single return statement and nothing else.

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Can you return a struct in C++?

Structure is user-defined data type, like built-in data types structure can be return from function.

Can we return multiple values in Python?

In Python, you can return multiple values by simply return them separated by commas. As an example, define a function that returns a string and a number as follows: Just write each value after the return , separated by commas. … Note that it is actually the comma which makes a tuple, not the parentheses.

How do you return an array in C++?

C++ does not allow to return an entire array as an argument to a function. However, you can return a pointer to an array by specifying the array’s name without an index.

How do you return an array?

In the following example, the method returns an array of integer type.

  1. import java.util.Arrays;
  2. public class ReturnArrayExample1.
  3. {
  4. public static void main(String args[])
  5. {
  6. int[] a=numbers(); //obtain the array.
  7. for (int i = 0; i < a.length; i++) //for loop to print the array.
  8. System.out.print( a[i]+ ” “);

What does return 1 do in C++?

returning different values like return 1 or return -1 means that program is returning error . When exit(0) is used to exit from program, destructors for locally scoped non-static objects are not called. But destructors are called if return 0 is used.

Why do we use return in C++?

The return statement causes execution to jump from the current function to whatever function called the current function. An optional a result (return variable) can be returned. A function may have more than one return statement (but returning the same type).

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How do you return a value from a void function in C++?

Return from void functions in C++

  1. A void function can do return. We can simply write return statement in a void fun(). …
  2. A void fun() can return another void function.
  3. A void() can return a void value. A void() cannot return a value that can be used.

29 мая 2017 г.

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