C++ is a powerful programming language used for developing various applications. One of the challenges that programmers face is returning multiple values from a function. Fortunately, there are several techniques that can be used to solve this problem.

The first technique involves using a struct. The struct can hold all the values that need to be returned from the function. For example, let's say we want to return a person's name, age, and gender. We can create a struct that includes these three variables and then return it from the function.

Another technique is to pass parameters by reference. This technique allows the function to change the values of the parameters, which can then be used after the function has completed. For example, we can create a function that accepts two integers and a float and updates their values. Once the function has completed, the updated values can be used in the code.

A third technique is to return a tuple. A tuple is like a struct, but it can hold a larger number of variables. Tuples are useful when the number of values that need to be returned is not fixed and can change at runtime.

Finally, we can use pointers to return multiple values from a function. In this technique, we create pointers to the variables that we want to change and pass them to the function. The function can then update the values of the variables through the pointers.

In conclusion, returning multiple values from a function in C++ can be achieved using several techniques. Structs, passing parameters by reference, tuples, and pointers are all viable options. It is important to choose the technique that is best suited for the specific problem at hand.

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