Exam 3: Inputoutput

Suppose that alpha is an int variable and ch is a char variable and the input is: 17 A What are the values after the following statements execute? Cin >> alpha; Cin >> ch;

Suppose that ch1, ch2, and ch3 are variables of the type char and the input is: A B C What is the value of ch3 after the following statements execute? cin.get(ch1); cin.get(ch2); cin.get(ch3);

In the statement cin >> x;, x can be a variable or an expression.

Suppose that x = 1565.683, y = 85.78, and z = 123.982. What is the output of the following statements? cout << fixed << showpoint; Cout << setprecision(3) << x << ' '; Cout << setprecision(4) << y << ' ' << setprecision(2) << z << endl;

You can disable the manipulator left by using the stream function ____________________.

Suppose that ch1, ch2, and ch3 are variables of the type char and the input is: A B C Choose the value of ch3 after the following statement executes: Cin >> ch1 >> ch2 >> ch3;

In the C++ statement, cin.get(u); u must be a variable of type ____________________.

What is the output of the following statements? cout << "123456789012345678901234567890" << endl Cout << setfill('#') << setw(10) << "Mickey" << setfill(' ') << setw(10) << "Donald" << setfill('*') << setw(10) << "Goofy" << endl;

Manipulators without parameters are part of the ____ header file.

Suppose that x is an int variable, ch is a char variable, and the input is: 276. Choose the values after the following statement executes: Cin >> ch >> x;

Suppose that x is an int variable and y is a double variable and the input is: 10 20.7 Choose the values after the following statement executes: cin >> x >> y;.

When reading data into a char variable, after skipping any leading whitespace characters, the extraction operator >> finds and stores only the next character; reading stops after a single character.

The manipulator ____________________ is used to output the value of an expression in a specific number of columns.

In an output statement, each occurrence of endl advances the cursor to the end of the current line on an output device.

Suppose that x and y are int variables, ch is a char variable, and the input is: 4 2 A 12 Choose the values of x, y, and ch after the following statement executes: Cin >> x >> ch >> y;

Suppose that x and y are int variables. Which of the following is a valid input statement?

The number of input data extracted by cin and >> depends on the number of variables appearing in the cin statement.

Entering a char value into an int variable causes serious errors, called input failure.

When you want to process only partial data, you can use the stream function ____ to discard a portion of the input.

Suppose that x is an int variable, y is a double variable, z is an int variable, and the input is: 15 76.3 14 Choose the values after the following statement executes: Cin >> x >> y >> z;