Косвенный рекурсивный вызов функции

#include <iostream>
#include <ctime>
 
using namespace std;
 
void choice(){
    system("cls");
    cout << "Choose the task you wanna execute:\n"
         << "[1] - Task 1\n"
         << "[2] - Task 2\n"
         << "[3] - Exit\n";
    int ans;
    cout << "What do you choose? : ";
    cin >> ans;
    switch(ans){
        case 1: task1();
        //case 2: task2();
        case 3: ;
        default: choice();
    }
}
 
void task1(){
    system("cls");
    cout << "Enter size of the massive: ";
    int mSize, bot, top, k, max;
    cin >> mSize;
    cout << "\nEnter bottom limit of massive numbers: ";
    cin >> bot;
    cout << "\nEnter top limit of massive numbers: ";
    cin >> top;
    cout << "\nEnter number to search in massive. 'K': ";
    cin >> k;
    cout << "\nCreating massive..." << "\n\nInitial massive:\n\n";
    mSize -= 1;
    int A[mSize];
    srand(time(0));
    for (int i=0, c=1; i<=mSize; i++, c++){
        A[i]=bot + rand() % top;
        cout << A[i] << ", ";
        if(c%5==0) cout << endl;
    }
    cout << "\nSearching for K...\n";
    for (int i=0, cflag=0, gflag=0; i<=mSize; i++){
 
        if (A[i]==k){
            if (cflag==0){cflag=1;cout << "Looks like we apparently found something!\n";}
            cout << "A[" << i+1 << "] = K = " << A[i] << endl;
            gflag = 1;
        }
 
        else
            if((i==mSize) && (gflag!=1)){
            cout << "Seems there's nothing around like 'K'.\n"
                 << "Replacing the first biggest number with 'K'\n";
            max = A[0];
 
            for(int i=0,maxAi; i<=mSize; i++){
 
                if (max < A[i]) {max = A[i];maxAi=i;}
                if (i==mSize){
                    A[maxAi]=k;
                    cout << "A[" << maxAi+1 << "] = " << max << " was replaced with K";
                    cout << "\n\nNew massive is:\n";
                    for (int i=0, c=1; i<=mSize; i++, c++){
                        cout << A[i] << ", ";
                        if(c%5==0) cout << endl;
                    }
                    goto mark;
                }
            }
        }
    }
    mark:
    cout << "\nDo you want to exec one more time? y\\n: ";
    char ans;
    cin >> ans;
    if (ans=='y') {system("cls");task1();}
}
 
int main()
{
    choice();
    return 0;
}