You can generally assume that code shown in the questions is intended to be syntactically correct, unless something in the question or one of the answers suggests otherwise.
1. Given the following statement in a C program that has no syntax errors: printf ("101%c0%c", a, 'b');
What can you say with reasonable certainty about this?
A. a must be a character variable (if a were not of type char, there would be a syntax error)
B. 'b' is a character variable
C. This will display 101a0b
D. This will display 6 characters, but you don't know what they all are.
E. The percent symbol (%) will appear in the output
2. You are modifying a program someone else wrote. The original programmer used a variable called "month" to store a number (1-12) representing the current month of the year. You wish to change the variable so that instead of a number it contains only the first character of that month's name (example: 'J' for January, etc.).
What is the most likely type modification you will make to the program?
A. Change double to int
B. Change int to letter
C. Change number to char
D. Change double to char
E. Change int to Char
3. Consider the function below, and then determine what value would be returned for the call:
f(27)
int f(int x) {
if (x%2 == 0) return x; else return 0;
}
A. 0 B. 1 C. 2 D. 5 E. 27
4. Suppose you write this function as part of your program. The compiler gives you a warning or error on lines A and B. Why?
void puzzler (int qmark) { if (qmark == 1)
return (3.0); /* line A */ else
return (2.0); /* line B */
}
A. The function has a void parameter list.
B. The function has a void return type.
C. The values returned should be 2 and 3, not 2.0 and 3.0.
D. It is not legal to have parentheses following return.
E. It is not legal to have more than one return staement in a function.
5. Suppose you wrote the following program:
#include int main(void)
{
int x = 3, y;
printf("x times y is %d\n", x * y); return 0;
}
Which of the following statements is true:
A. The program would not compile because y is an undefined variable.
B. The program would not compile (that is, it would have syntax errors) because y is never initialized.
C. While running, the program would stop when it reaches the printf because y is uninitialized.
D. The program would print out "x times y is 0", because y is automatically initialized to 0.
E. The program would print out some random number as the value of x * y It might be 0, it might not be.
6. What is the value of this expression in C?
1 + 2 / 3 * 4 + 1
A. 2 B. 3 C. 4 D. 4.6666... E. 5
7. void TestFunction (int i, double d) {
...
}
int main (void) {
int ivalue1, ivalue2; double mainDouble;
...
/* line A */
...
} /* end of main */
Which of the following would be a (syntactically) correct statement to insert at line A in order to
call TestFunction?
A. ivalue1 = TestFunction (ivalue2, mainDouble);
B. TestFunction (0, 2.0);
C. TestFunction (ivalue1, mainDouble) = void;
D. TestFunction (int i, double d);
E. All of the above choices are correct syntactically; which one should be used depends upon the logic of the program.
8. Among the choices given, the best description of an "algorithm" is...
A. a value stored in memory
B. an instruction which the CPU can execute
C. a series of steps for solving a problem
D. a mathematical equation
E. a combination of operators and operands
9. Fill in the body of the following function that takes three integer parameters: hours, minutes, and seconds and then computes and returns (without printing) the total number of seconds.
#define SECONDS_PER_MINUTE 60
#define MINUTES_PER_HOUR 60
/* Convert hours, minutes, and seconds to the total number of seconds */ int totalSeconds(int hours, int minutes, int seconds) {
}
10. Write a function which takes three integer parameters, computes their average as a double, and prints the average. This function does not return a value.