Previously we used functions like action makers, we gave the parameters (or no), and the function did some actions we wanted.

However, the keyword `void`, which we used in previous examples, shouldn’t return a value. If you want the function to return any values, you have to specify the type of value you want to get instead of void and use the keyword `return`. For instance:

// Declaration of the function
int sum(int a, int b) {
&nbsp;&nbsp;&nbsp;&nbsp;return a+b;
}

int main() {
&nbsp;&nbsp;&nbsp;&nbsp;// Call the function to be executed 
&nbsp;&nbsp;&nbsp;&nbsp;cout << sum(4, 5);
&nbsp;&nbsp;&nbsp;&nbsp;return 0;
}

Here the function `sum()` gets 2 integer values and returns their summary (sum) - integer value, so before the declaration, we use `int`.

The function firstly returns the value, and then we print it in the `main` function.

If we want our function to return the char value, we should specify

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