TRUE /FALSE 1. The symbol = is the C equality operator. 2. The following decisio

Question

TRUE /FALSE

1. The symbol = is the C equality operator.

2. The following decision structure is invalid:

if ( x <= y)
printf("%lf", x);
else
printf("%lf", y);

3. Conditions are said to be mutually exclusive if at most one condition can be true at a time.

4. A compound statement is a sequence of statements enclosed in {} braces.

5. The following program segment gives x and y the same value if the condition is true:

if (x > y) {
y = x;
x = y;
}

OBJECTIVE QUESTION

1. 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 ");
else
printf("B ");
else
printf("C ");
else
printf("D ");

a. 0 < x < 100
b. x <= 0
c. 100 <= x <= 200
d. x > 200
e. 100 < x <= 200

2. The effect of the following program segment can best be described as __________.

if (x > y)
z = x;
if (x == y)
z = 0;
if (x < y)
z = y;

a. The smaller of x and y is stored in z.
b. The larger of x and y is stored in z.
c. The larger of x and y is stored in z unless x and y are equal, in which case z is assigned zero.
d. The larger of x and y is stored in z unless x and y are not equal, in which case z is assigned zero.
e. none of the above

3. If the input to the program segment at the right is 85, what is its output?

scanf("%d", &d);
if (s >= 90)
printf("A ");
else if (s >= 70)
printf("C ");
else if (s >= 80)
printf("B ");
else
printf("D ");
a. A
b. B
c. C
d. D
e. A & B

Explanation / Answer

TRUE /FALSE

1. The symbol = is the C equality operator.    TRUE

2. The following decision structure is invalid:

if ( x <= y)
printf("%lf", x);
else
printf("%lf", y);      FALSE

3. Conditions are said to be mutually exclusive if at most one condition can be true at a time. TRUE

4. A compound statement is a sequence of statements enclosed in {} braces. TRUE

5. The following program segment gives x and y the same value if the condition is true:

if (x > y) {
y = x;
x = y;
} TRUE

OBJECTIVE QUESTION

1. 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 ");
else
printf("B ");
else
printf("C ");
else
printf("D ");

a. 0 < x < 100
b. x <= 0
c. 100 <= x <= 200    this ans.
d. x > 200
e. 100 < x <= 200

2. The effect of the following program segment can best be described as __________.

if (x > y)
z = x;
if (x == y)
z = 0;
if (x < y)
z = y;

a. The smaller of x and y is stored in z.
b. The larger of x and y is stored in z.
c. The larger of x and y is stored in z unless x and y are equal, in which case z is assigned zero. this is ans.
d. The larger of x and y is stored in z unless x and y are not equal, in which case z is assigned zero.
e. none of the above

3. If the input to the program segment at the right is 85, what is its output?

scanf("%d", &d);
if (s >= 90)
printf("A ");
else if (s >= 70)
printf("C ");
else if (s >= 80)
printf("B ");
else
printf("D ");
a. A
b. B
c. C       this is ans.
d. D
e. A & B

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