Sizeof operator on string array is giving different output in C++

I am trying to compile the following code:

#include <iostream>
using namespace std;
void show1(string text1[]) {

    cout << "Size of array text1 in show1: " << sizeof(text1) << endl;
}
int main() {
    string text1[] = {"apple","melon","pineapple"};
    cout << "Size of array text1: " << sizeof(text1) << endl;
    cout << "Size of string in the compiler: " << sizeof(string) << endl;
    show1(text1);
    return 0;
}

And the output is shown below:

Size of array text1: 96
Size of string in the compiler: 32
Size of array text1 in show1: 8

I am not able to understand, why is the sizeof operator working on the same array giving two different outputs at two different points? Please explain.