3. Consider the following C++ code:

string str1;

string str2;

char ch;

int index;

cin >> str1;

cin >> str2;

cin >> index;

ch = str1[index];

str1[index] = str2[index];

str2[index] = ch;

cout << str1 << " " << str2 << endl;

Answer the following questions:

a. What is the output if the input is Hello There 2?

b. What is the output if the input is Diamond Gold 0?

c. What is the output if the input is C++ Java 1?

4. Suppose that you have the following statements:

string str1, str2;

cin >> str1 >> str2;

if (str1 == str2)

cout << str1 + '!' << endl;

else if (str1 > str2)

cout << str1 + " > " + str2 << endl;

else

cout << str1 + " < " + str2 << endl;

Answer the following questions:

a. What is the output if the input is Programming Project?

b. What is the output if the input is Summer Trip?

c. What is the output if the input is Winter Cold?