196: CPS Introduction to Computer programming: C Sample midterm exam 1. A C compiler detects _______________. a. syntax errors b. run-time errors c. result errors d. arithmetic faults e. all of the above 2. For what exact range of values of variable x does the following code segment display the letter 'C'? if (x <= 200) if (x < 100) if (x <= 0) printf("A\n"); else printf("B\n"); else printf("C\n"); else printf("D\n"); a. 0 < x < 100 b. x <= 0 c. 100 <= x <= 200 d. x > 200 e. 100 < x <= 200 3. If num is a variable of type int and temp is a variable of type double, how could you correctly complete this function call? scanf("%lf%d", _________); a. num, temp b. &num, &temp c. temp, num d. &temp, &num e. none of the above 4. Assuming that x = 2, y= 3, and z=2, what value is assigned to r in the statement r = f(z, x, y); if f is defined as follows? int f(int a, int b, int c) { int p;
p = c * a + 3 * b; return (p); } a. 13 b. 15 c. 12 d. 14 e. none of the above 5. What is displayed by the C statements at the right if the value input is 3? a. Equal b. Less c. Greater d. Error scanf("%d", &n); if (n = 5) printf("Equal\n"); else if (n < 5) printf("Less\n"); else printf("Greater\n");
Questions 6 and 7 concern the following program fragment: char r, x, y, z, w; scanf("%c%c%c%c", &x, &y, &z, &w); if (x < y) r = x; else r = y; if (r > z) r = z; if (r > w) r = w; printf("%c\n", r); 6. What is the program output if the user types runt followed by a carriage return the when program is run? a. r b. u c. n d. t e. none of the above 7. The program's effect can best be described as __________.
a. It displays the letter 'r' after comparing it to x, y, and z. b. Of the four input characters, it displays the one that comes first in the alphabet. c. Of the four input characters, it displays the one that comes last in the alphabet. d. Of the four input characters, it displays the one that comes second in the alphabet. e. It displays nothing since characters cannot be compared. 8. The decision table below shows fines imposed for speeding violations. Write a detailed algorithm for aprogram that assigns the correct fine to type double variable fine based on the value of type int variable speed. You have to write detailed psudocode and draw the equivalent flowchart. Speed (mph) 65 or less 66-70 71-75 76-80 over 80 Fine ($) $0 $ 15.00 $ 30.00 + 5 * (number of miles over 65) $ 50.00 + 10 * (number of miles over 65) $ 75.00 + 15 * (number of miles over 65)
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