Problem 3
Fortran has a three-way IF statement of the form IF(expression) \(n 1, n 2, n 3\) where expression is a numeric expression and n1, n2, n3 are statement numbers. Control transfers to statement \(\mathrm{n} 1\) if expression is negative, to statement \(n 2\) if expression equals 0 , and to \(n 3\) if expression is positive. What is the output of the following section of Fortran code if \(/\) has the value 3 and \(M A X\) has the value 4 ? IF (I - MAX) \(10,20,30\) 10 WRITE \((*, *) \quad 2 * I\) 20 WRITE \((*, *)\) I*I 30 WRITE \((*, *) \quad I * \star \mathrm{MAX}\)
Problem 4
What is the value of RESULT after execution of the following COBOL code? Assume that VALUE1 has the value 100 . MOVE VALUE1 TO VALUE2. ADD 1 TO VALUE2. ADD VALUE1 TO VALUE2. ADD VALUE1 TO VALUE2 GIVING RESULT.
Problem 7
The following section of Ada code conveys the services that a "teller" object can perform. What are these services? task type teller is \- Entries to do simple \- transactions and return status entry deposit (id: cust_id; val : in money; stat: out status) ; entry withdraw (id: cust_id; val : in money; stat: out status) ; entry balance (id: cust_id; val : out money; stat : out status); end teller;
Problem 8
In the following two Java output statements, System. out. println ("Hello. Welcome to this program."); System.out.print ("Tell me your favorite number: ") ; why do you think the first uses println and the second uses print?
Problem 9
In Python, indentation is used to indicate the extent of a block of code. What is the output of the following Python code? first \(=3\) second \(=5\) if first < second: print ("second is bigger") else: print ("but this time ") print ("first is bigger")
Problem 10
, \&\& is the symbol for the Boolean AND operation, and \(\|\) is the symbol for the Boolean OR operation. What is the truth value of the following Boolean expression… # In C#, \&\& is the symbol for the Boolean AND operation, and \(\|\) is the symbol for the Boolean OR operation. What is the truth value of the following Boolean expressions? a. \((3<=3) \& \&(7>5)\) b. \((3<3) \|(7>5)\) c. \((4<1) \& \&(3>2)\)
Problem 11
Which procedural language might be most appropriate for a program to do each of the following applications and why? a. Compute trajectories for a satellite launcher. b. Monitor an input device feeding data from an experiment to the computer. c. Process the day's transactions at an ATM (automated teller machine).
Problem 14
Describe the text on a webpage that results from the HTML statement: \(<\mathrm{p}>\) The \) brown cow across the green \(\) field. \(\)
Problem 17
Write a Scheme function that returns a list consisting of the first two values in the input list but in the opposite order.
Problem 18
Consider the following Scheme function: (define (mystery input-list) (cond ((null? input-list) 0) (else (+ 1 (mystery (cdr input-list)) )) )) What is the result of invoking the function as follows? (mystery (list 34 5)) Explain what this function does in general.
