Programming Languages (C++)

1. In an assignment statement
    a=b;
Which of the following statement is true?
a.    The variable a and the variable b are equal.
b.    The value of b is assigned to variable a but the later changes on variable b will not effect the value of
       variable a
c.    The value of b is assigned to variable a and the later changes on variable b will effect the value of
       variable a
d.    The value of variable a is assigned to variable b and the value of variable b is assigned to variable a.

2. All of the following are valid expressions in C++
a  =  2 + (b = 5);
a  = b = c = 5;
a  = 11 % 3
a.    True
b.    False

3. To increase the value of c by one which of the following statement is wrong?
a.    c++;
b.    c = c + 1;
c.    c + 1 => c;
d.    c += 1

4. When following piece of code is executed, what happens?
     b = 3;
    a = b++;
a.    a contains 3 and b contains 4
b.    a contains 4 and b contains 4
c.    a contains 4 and b contains 3
d.    a contains 3 and b contains 3

5. The result of a Relational operation is always
a.    either True or False
b.    is less than or is more than
c.    is equal or less or more
d.    All of these

6. Which of the following is not a valid relational operator?
a.    ==
b.    =>
c.    >=
d.    >=

7. What is the final value of x when the code int x; for(x=0; x<10; x++) {} is run?
A. 10
B. 9
C. 0
D. 1

8. When does the code block following while(x<100) execute?
A. When x is less than one hundred
B. When x is greater than one hundred
C. When x is equal to one hundred
D. While it wishes

9. Which is not a loop structure?
A. for
B. do while
C. while
D. repeat until

10. How many times is a do while loop guaranteed to loop?
A. 0
B. Infinitely
C. 1
D. Variable

Answers:
1.    b. The value of b is assigned to variable a but the later changes on variable b will not effect the value of
           variable a
2.    a. True
3.    c. c + 1 => c;
4.    a. a contains 3 and b contains 4
5.    a. either True or False
6.    b. =>
7.    A. 10
8.    A. When x is less than one hundred
9.    D. Repeat Until
10.  C. 1

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