Here are the three functions that are implemented in the code below:

void get_string(string &str_to_store); void set_replace_string(string copy_str, string &dash_str); int get_search_replace(char c, string copy_str, string &dash_str); 

1a. Please change the prototypes in the code below to (Do not change the purpose of each function, modify the program so it works with the updated prototypes):

void get_string(string *str_to_store); void set_replace_string(string copy_str, string *dash_str); int get_search_replace(char c, string copy_str, string *dash_str); 

1b. Please explain what has been passed into these pointer variables, and tell the difference between pass by reference and pass by pointers.

#include using namespace std;

void get_string(string& str_to_store); void set_replace_string(string copy_str, string& dash_str); int get_search_replace(char c, string copy_str, string& dash_str);

int main(){ string str_to_store, dash_str; char c; int count; get_string(str_to_store); set_replace_string(str_to_store,dash_str);

cout<<"Dash string : " << dash_str << endl; cout<<"Enter a character to search : "; cin >> c; cin.ignore(1024,' '); count = get_search_replace(c,str_to_store,dash_str); cout<<"Updated dash string: " << dash_str<

return 0; }

void get_string(string& str_to_store){ cout<<"Enter a string : "; getline(cin, str_to_store,' '); } void set_replace_string(string copy_str, string& dash_str){ dash_str =""; for(int i=0; i