CSC161 Intro to CS Using Java - If Statement Worksheet

If Statement Worksheet

For each of the following, correct the syntax errors.

1.  if x > 25.0
       y = x
    else
       y = z;

2.  if (x >> 0);
       System.out.println("positive " + x);
    else;
       System.out.println("negative " + x);




What is the output of each of the following statements? Assume that
x = 5, y = 2, z = 10, and temp = 0

3.  if (y >= x)
       y = z;
    System.out.println(x + "  " + y + "  " + z);

4.  if (y >= x) {
       y = z;
       System.out.println(x + "  " + y + "  " + z);
    }

5.  if (x >= 6)
    System.out.println(x + y);
    System.out.println(x + y);

6.  if (x + y > z)
       x = y + z;
    else
       x = y - z;
    System.out.println(x + "  " + y + "  " + z);

Write if statements for the following problems. Use meaningful variable names. You can assume that the variables you use are declared and have been initialized.

7.  If a variable angle is equal to 90 degrees, print the message "right
    angle. Otherwise print the message "not a right angle".

8.  If the difference between variables temp1 and temp2 is more than 2.3,
    set the variable approx to (temp1 - temp2) * factor.

9.  A student at State U is ready to graduate if he or she has completed
    at least 122 credits. Write the statements to test whether a student
    is ready to graduate, and print a message telling whether he or she
    is ready.