Example 1

#include <iostream>

using namespace std;

int main(){
        string x, y;
        cout<<"Enter x: ";
        getline(cin,x);

        cout<<"Enter y: ";
        cin>>y;

        cout<<"x= "<< x <<", y="<<y<<endl; 

        return 0;
}

Example 2
#include<iostream>

using namespace std;
int main() {
   string myStr = "This is a sample string";
   cout << "length() function: " << myStr.length() <<endl;
   cout << "size() function: " << myStr.size() <<endl;
   cout << "String length using while loop: ";
   int count = 0;
   while(myStr[count] != '\0'){
      count++;
   }
   cout << count << endl;
   cout << "String length using for loop: ";
   count = 0;
   for(int i = 0; myStr[i] != '\0'; i++){
      count++;
   }
   cout << count;
}

Example 3
#include<iostream>

using namespace std;
int main() {
    string x, y;

    cout << "Enter x: ";
    getline(cin,x);
    cout << "Enter y: ";
    getline(cin, y);
    
    if(x==y)
     	cout<<"x and y are equal"<<endl;
    else if(x<y)
        	cout<<"x is alphabetically before y"<<endl;
    else if(x>y)
        	cout << "x is alphabetically after y" << endl;
        	
    return 0;

}

Example 4
#include<iostream>

using namespace std;
int main() {

    string x = "Information and ";
    string y = "Communication Technology";
    string z;
    z = x + y;
    cout << z << endl;
        	
    return 0;

}