access to array elements from different function but same class - c++

Question

I have class that contains some functions with an array. One of them called pick, this function does not has an array but i want to display array element from other function, once i write code to display array element i can not get the element, although the code work and if i add normal text it will display but can not display array elements, i will attach the code below:
Note i did not attache full code only important parts
#include <iostream>
#include<stdlib.h>
#include <string>
using namespace std;
// global variable
string plantType;
int temperatures ;
string water;
string sunExposure;
bool pet;
string plant1,plant2,plant3;
class inside{
public:
void low(){
string plant1 [3]={"Snake plant","Spider plant","Aloe Vera plant"};
for(int i =0; i<3; i++){
cout << "* "<< plant1[i]<<endl;
}
}
void medium(){
string plant2 [5]={"Pothos plant","Dracaena plant","ZZ plant","Rubber plant","Philodendron Green plant"};
for(int i =0; i<5; i++){
cout << "* "<< plant2[i]<<endl;
}
}
void high(){
string plant3 [2]={"Bird’s Nest Fern plant","Peace Lily plant"};
for(int i =0; i<2; i++){
cout << "* "<< plant3[i]<<endl;
}
}
void pick(){
cout <<"Best choice for you is: ";
if (temperatures >= 13 && temperatures <=29 ){
if(water=="low"){
if(sunExposure=="fully"){
cout<<"test"<<endl;
if(pet==true){
cout<<plant1[1]<<endl; //this line cannot be executed
}
}
}}}
int main(){
cout <<"Where do you want to grow the plant (inside), or (outside)"<<endl;
cin>>grow;
if (grow == "inside"){
//inside home
cout<<endl<<"inside"<<endl;
cout<<"Enter the Temperature in (Celsius scale 13-29)"<<endl;
cin>>temperatures;
cout<<"Enter water level (low - medium - high)"<<endl;
cin>>water;
cout<<"Enter Sun Exposure (fully - partly - shady)"<<endl;
cin>>sunExposure;
cout<<"Do you have pet (true or false)? "<<endl;
cin>>pet;
inside inside;
inside.pick();
}
}

Answer 1

The string variables plant1[3], plant2[3] & plant3[3] are only visible to low(), medium(), high() but they're not for each other. For example, you're something trying to access a locally declared variable of foo() function in bar() function, which is impossible.
Secondly, you're trying to access plant1[3] data member in pick() but compiler doesn't know where you've actually defined those three plants' name outside of that function, just it knows plant1 variable with no arrays which is declared in the private section of the class. Hence, there's a good chance your code will get fail.
Rather you could just declare the same thing in this way:
class inside {
std::string plants1[3] = {"...", ...}; // these variables are
std::string plants2[3] = {"...", ...}; // only visible inside the
std::string plants3[3] = {"...", ...}; // class member functions
.
.
}
And after that, you'll get the line executed successfully.