Exam 3: Inputoutput

Suppose that alpha, beta, and gamma are int variables and the input is:What is the value of gamma after the following statements execute? cin >> alpha; Cin)ignore(100, '\n'); Cin >> beta; Cin)ignore(100,'\n'); Cin >> gamma;

The following statements will result in input failure if the input values are not on a separate line.(Assume that x and y are int variables.) cin >> x; cin >> y;

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;

The function ____________________ returns the next character in the input stream; it does not remove the character from the input stream.

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

Suppose that x = 1565.683, y = 85.78, and z = 123.982.What is the output of the following statements?

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

Suppose that x and y are int variables, and z is a double variable.The input is:​ 28 32.6 12 ​ Choose the values of x, y, and z after the following statement executes:​ Cin >> x >> y >> z; ​

What is the output of the following statements?

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

The extraction operator >> skips only all leading blanks when searching for the next data in the input stream.

Suppose that x = 25.67, y = 356.876, and z = 7623.9674.What is the output of the following statements?

Suppose that ch1 and ch2 are char variables and the input is:WXYZ What is the value of ch2 after the following statements execute? Cin >> ch1; Ch2 = cin.peek(); Cin >> ch2;

You can use the function getline to read a string containing blanks.

If input failure occurs in a C++ program, the program terminates immediately and displays an error message.

C++ provides a header file called ____________________, which is used for file I/O.

​In C++, the dot is an operator called the ____ operator.

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

Suppose that x = 55.68, y = 476.859, and z = 23.8216.What is the output of the following statements?

C++ has a special name for the data types istream and ostream.They are called ____________________.