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Jessi wants to write a program where a recursive function, recursiveFunc, is called with an input integer n. Inside the function, a local variable m is initialized to 3 using the auto keyword. The program prints the value of m before and after each recursive call. The input integer n is obtained from the user in the main function.Input format :The input consists of an integer n.

Question

Jessi wants to write a program where a recursive function, recursiveFunc, is called with an input integer n. Inside the function, a local variable m is initialized to 3 using the auto keyword. The program prints the value of m before and after each recursive call. The input integer n is obtained from the user in the main function.Input format :The input consists of an integer n.

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Solution

It seems like you want to write a recursive function in C++ that prints the value of a local variable before and after each recursive call. Here's a step-by-step guide on how to do it:

  1. First, you need to include the necessary libraries. In this case, you need the iostream library for input/output operations.
#include <iostream>
  1. Next, you need to declare your recursive function. Let's call it recursiveFunc. This function takes an integer as an argument and doesn't return anything. Inside the function, declare a local variable m and initialize it to 3 using the auto keyword. Then, print the value of m.
void recursiveFunc(int n) {
    auto m = 3;
    std::cout << "Before recursive call, m = " << m << std::endl;
  1. Now, you need to implement the recursive call. First, check if n is greater than 0. If it is, decrement n and call recursiveFunc with the new value of n. After the recursive call, print the value of m again.
    if (n > 0) {
        recursiveFunc(n - 1);
        std::cout << "After recursive call, m = " << m << std::endl;
    }
}
  1. Finally, you need to write the main function. Inside this function, ask the user for an integer and call recursiveFunc with the input value.
int main() {
    int n;
    std::cout << "Enter an integer: ";
    std::cin >> n;
    recursiveFunc(n);
    return 0;
}
  1. Now, you can compile and run your program. It will ask you for an integer and then print the value of m before and after each recursive call until n is 0.

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