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23/03/2021 09:58:25 AM

Câu hỏi trắc nghiệm ngôn ngữ lập trình C (tiếp theo)

120. Comments in C++ are started with

  1.//
 2. {
 3. ;

 121. Evaluate 4+5*3

            1.19
            2.27

122. Evaluate 7*3+2

            1.23
            2.35

123. Evaluate (4+2)*3

             1.18
             2.10

124. Evaluate 17/3

            1.5
            2.6

125. Evaluate 17%3

  1.0
 2.1
 3. 2
 4. 3

126.

Evaluate 1/2

 

 0
 1

127.

Evaluate 2*8/2*4

 

 32
 2

128.

Consider the following section of C++ program, in which i and n are int variables

 

n = 7;

i = 4;

i = n++;

 

What are the values of i and n ?

 

 i=7 n=8
 i=7 n=7
 i=8 n=8
 i=4 n=7

129.

Consider the following section of C++ program, in which i and n are int variables

 

n = 5;

i = 9;

i = --n;

 

What are the values of i and n ?

 

 i=9 n=5
 i=4 n=4
 i=4 n=5
 i=5 n=4130.

What values can a relational expression take?

 

 true and false
Any numerical value

 

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