1. (Dreaded) Quiz 2
Next Monday

2. Strings Revisited string Is a Type in C++ Library <string>
May Initialize or Assign with Double Quoted Values
May Compare using Equality Operators
Can Access Single Characters using Square Bracket Operator ([ ])
Can Use length() Object Function
Can Add to String

3. #include <iostream>
#include <string>
using namespace std;
int main() {
string lastname, firstname;
cout << "Enter last name: ";
cin >> lastname;
cout << "Enter first name: ";
cin >> firstname;
cout << "Your name is " << firstname << " " << lastname << endl;
return(0); }

4. #include <iostream>
#include <string>
using namespace std;
int main() {
string lastname, firstname;
bool instructor;
cout << "Enter last name: ";
cin >> lastname;
cout << "Enter Firstname: ";
cin >> firstname;
if (lastname == "hanrath")
instructor = true;
else
instructor = false;
return(0); }

5. #include <iostream>
#include <string>
using namespace std;
int main() {
string word = "start";
cout << word << endl;
word[0] = 'h';
word[1] = 'e';
return(0); }

6. #include <iostream>
#include <string>
using namespace std;
int main() {
string word = "start";
cout << word << endl;
word[0] = 'h';
word[1] = 'e';
cout << "String length is: " << word.length() << endl;
return(0); }

7. #include <iostream>
#include <string>
using namespace std;
int main() {
string word = "start";
cout << word << endl;
word[0] = 'h';
word[1] = 'e';
cout << "String length is: " << word.length() << endl;
word = word + " " + "healthy" + " " + word;
return(0); }

8. More on Input Input Failure Common *MUST* Be Part of Test Plan
cin Used for Input
If User Enters Bad Type of Data, cin Left in failed state
Must Use cin.clear() function to Start Over
Must Use cin.ignore() function to Get Beyond Bad Input
May Use cin as Condition in if Statement
Pages , 175 in Malik

9. Input Failure Example #include <iostream>
#include <string>
using namespace std;
int main() {
int numEmployees;
bool done = false;
string garbage;
while (!done)
cout << "Enter number of employees: ";
cin >> numEmployees;
if (!cin) //if input stream in failed state
cout << "Bad input, try again." << endl;
cin.clear(); // changes input state to ok
cin.ignore(200,'\n'); // gets beyond bad input characters }
else
done = true;
return(0);

10. Know for Quiz 2 Everything through Exam 1
while, for, and do-while Loops
New string Features
Input Failure