INTI COLLEGE MALAYSIA

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1 CSC 107 (F) / Page 1 of 6 INTI COLLEGE MALAYSIA COMPUTING AND INFORMATION TECHNOLOGY CERTIFICATE CSC 107 : PROGRAMMING IN C (BASED ON AB) FINAL EXAMINATION : AUGUST 2000 SESSION This paper consists of SIX questions. Attempt any FOUR questions in the answer booklet provided. All questions carry equal marks. 1. (a) Write a do { while structure that reverses a number that is entered by the user. (5 marks) The large economy size of an item is not always a better buy than the small size. This is particularly true when buying pizzas. Pizza sizes are given as the diameter of the pizza in inches. However, the quantity of pizza is determined by the area of the pizza and the area is not proportional to the diameter. Most people cannot easily estimate the difference in area between a ten-inch pizza and a twelve-inch pizza, and so cannot easily determine which is the best buy that is, which size has the lowest price per square inch. Input the diameter in inches and the price for each of two sizes of pizza. Output the cost per square inch for each of the two sizes of pizza and tell which is the better buy, that is, which has the lowest cost per square inch. (If they are the same cost per square inch, consider the smaller one to be the better buy.) Use function to compute for radius, area, and return the price of the pizza. Radius = one half of diameter Area = PIr 2 (c) Use built in function for string handling that converts a string to a uppercase. You are supposed to convert a name from lowercase to uppercase. (5 marks)

2 CSC 107 (F) / Page 2 of 6 2. (a) (i) Write a code segment to produce the following output: (5 marks) (ii) (5 marks) Develop a program that will determine if a department store customer has exceeded the credit limit on a charge account. For each account, the following facts are available: (i) account number, (ii) balance at the beginning of the month, (iii) total of all items charged by this customer in this month, (iv) total of all credits applied to his customer s account this month, (v) allowed credit limit. the program should input each of these facts, calculate the new balance (= beginning balance + charges credits), and determine if the new balance exceeds the customer s credit limit. For those customers whose credit limit is exceeded, the program should display the customer s account number, credit limit, new balance and the message credit limit exceeded. (c) Evaluate the following, when a = 4, b = 3, c = 1 and Z. (i) Z = ++a + ++b ++c (ii) Z = a b ++c a (5 marks)

3 CSC 107 (F) / Page 3 of 6 3. (a) Write a c program using recursive function power (base, exponent) that when invoked returns base exponent. For example, power (3,4) = 3*3*3*3. Assume that the exponent is an integer greater than or equal to 1. Hint: The recursion step would use the relationship. base exponent = base base exponent 1 and the terminating condition occurs when exponent is equal to 1 because base 1 = base. Write a program that reads five numbers (each between 1 and 30). For each number read, your program should print a line containing that number of adjacent asterisks. For example, if your program reads the number seven, it should print *******. 4. (a) Identify and correct the errors in each of the following statements (Note: there may be more than one error per statement): (i) (ii) (iii) (iv) printf(??the product of %d and %d is %d??\n, x, y); if (number => largest) larger == number; if (x = y); printf(%d is equal to %d\n??, x, y); Printf(??The value you entered is: %d\n, &value); (v) if (age >= 65); printf(??age is greater than or equal to 65\n??); else printf(??age is less than 65\n??); (vi) while (x <= 100) total += x; ++x; (vii) while (y > 0) { printf(??%d\n??, y); ++y;

4 (viii) for (x = ; x <=.0001; x += ) printf(??%.7f\n??, x); CSC 107 (F) / Page 4 of 6 (ix) int x = 1, total; while (x <= 10) { total += x; ++x; (x) For (x = 100, x >= 1, x++) printf(??%d\n??, x); What does the following program print? #include <stdio.h> main ( ) ( int x = 1, total = 0, y; while (x <= 10) { y = x * x; printf(%d\n??, y); total += y; ++x; printf(??total is %d\n??, total); return 0; (5 marks) (c) Write a C program that utilizes looping to print the following table of values: N 10*N 100*N 1000*N (a) An integer number is said to be a perfect number if its factors, including 1 (but not the

5 CSC 107 (F) / Page 5 of 6 number itself), sum to the number. For example, 6 is a perfect number because 6 = Write a function perfect that determines if parameter number is a perfect number. Use this function in a program that determines and prints all the perfect numbers between 1 and Print the factors of each perfect number to confirm that the number is indeed perfect. Define a structure type auto_t to represent an automobile. Include components for the make and the model (strings), the odometer reading, the manufacture and purchase dates (use another user-defined type called date_t), and the gas tank (use a user-defined type tank_t) with components for tank capacity and current fuel level, giving both in gallons. Your structure must be able to store many records entered by the user. A small sample set of data might look like the following: Make Model Odometer Manufacture Purchase Tank Current date date capacity fuel level Mercury Sable Mazda Navajo (a) Mailing rates for a magazine are listed in the table below: Mailing Rates Weight Mailing Zones (Kg) A B C which will be used to compute the mailing costs. The data will consist of subscription number an integer value, mailing zone a character, and weight in kg a double. Write a program to output each subscription number, mail rate, and cost for that material beneath the headings ID NO, MAIL RATE and MAIL COST using the input file Rate.dat and the output file Cost.dat. Write a program that prompts the user to enter two 2 matrices, each of which consists of two rows and two columns (a 2 by 2 array). Once the values of the matrices have

6 CSC 107 (F) / Page 6 of 6 been entered, the program should sum the two matrices and store the result in another matrix. Print out the result of the matrix. - The End - csc107u00f.doc msw/28tem2000/lml

[Page 177 (continued)] a. if ( age >= 65 ); cout << "Age is greater than or equal to 65" << endl; else cout << "Age is less than 65 << endl";

[Page 177 (continued)] a. if ( age >= 65 ); cout << Age is greater than or equal to 65 << endl; else cout << Age is less than 65 << endl; Page 1 of 10 [Page 177 (continued)] Exercises 4.11 Identify and correct the error(s) in each of the following: a. if ( age >= 65 ); cout