distance calculating program

[dooper]

i have to make a program which calculate disstance b/w 2 cities i try my best here is my code

#include <iostream>
#include <string.h>
using namespace std;
string response;
int main ()
{
    int array[4][4] = {
    {   0,  100, 180, 109 },
    {  100,   0, 101, 192 },
    {  173, 101, 0, 255  },
    {  103, 191, 255, 0  },
    };


char *cities[]={"city1",
                  "city2",
                  "city3",
                  "city4"
             }; 
             
  
                   
cout <<"\t city1 and city2" <<endl;
cout <<"\t city2 and city3"<<endl;
cout <<"\t city3 and city4" <<endl;
cout <<"\t city4 and city1" <<endl;

int i;
string response;
cout <<"\t Select 2 cities:" <<endl;
getline (cin,response);



if (response  == "city1 and city2") {
    cout << " Total Distance = " ;
    cout<<array[0][1]<<endl;
}
else if (response == "city2 and city3")
{
    cout << " Total Distance = " ;
    cout<<array[0][2]<<endl;
}
else if (response == "city3 and city4"){
    cout << " Total Distance = " ;
    cout<<array[0][3]<<endl;
}
else if (response == "city4 and city1"){
    cout << " Total Distance = " ;
    cout<<array[0][4]<<endl;
}
else
{
 cout <<"Incorrect!";

}
system ("pause");
}

but this one is not working fine i mean if user only enter city1 it shows output but as long as if user enter a space like city1 and city2 it shows incorrect.

i ask to teacher he was saying to use stricmp like
char *cities={"city1" , 0
"city2", 1
...
... }

then
distance stricmp=cities[i]

but i m not able to use please help.

[helios]

What if the user wants to know the distance between city2 and city4?

[zipuch]

Maybe you should not use string to get the answer?
You can use int, for example:

int answer;
cout<<"What apple you want, green(1) or red(2) ?"<<endl;
cin>>answer;
if(answer == 1)
   cout<<"Your choice is green apple"<<endl;
else if(answer == 2)
   cout<<"Your choice is red apple"<<endl;
else
   cout<<"Incorrect!";

[dooper]

@ zipuch i have to use stricmp to compare two strings

@ helios i don't have any idea :(