Introduction to Operator in C - Quiz

Q: What is the value of x in this C code?

<span class="pln">
</span><span class="com">#include</span><span class="str">&lt;stdio.h&gt;</span><span class="pln">
</span><span class="kwd">void</span><span class="pln"> main</span><span class="pun">()</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
	</span><span class="kwd">int</span><span class="pln"> x </span><span class="pun">=</span><span class="pln"> </span><span class="lit">4</span><span class="pln"> </span><span class="pun">*</span><span class="lit">5</span><span class="pln"> </span><span class="pun">/</span><span class="pln"> </span><span class="lit">2</span><span class="pln"> </span><span class="pun">+</span><span class="pln"> </span><span class="lit">9</span><span class="pun">;</span><span class="pln">
	printf</span><span class="pun">(</span><span class="str">"%d"</span><span class="pun">,</span><span class="pln">x</span><span class="pun">);</span><span class="pln">
</span><span class="pun">}</span>

A. 18
B. 6.75
C. 19
D. 1.85

Correct Option: C
Remarks:

Explanation: Option C

Q: Which of the following data type will throw an error on modulus operation(%)?

A. char
B. short
C. float
D. int

Correct Option: B
Remarks:

Explanation: Option C <p><a title="Learn more about operators" href="/tutorial/introduction-to-operator/1/179">Learn more about operators</a></p> <p>Assume variable <strong>A</strong> holds 10 and variable <strong>B</strong> holds 20 then −</p> <table class="table table-bordered"> <tbody> <tr> <td class="ts">%</td> <td>Modulus Operator and remainder of after an integer division.</td> <td class="ts">B % A = 0</td> </tr> </tbody> </table>

Q: What will be the output?

<span class="pln">
</span><span class="com">#include</span><span class="pln"> </span><span class="str">&lt;stdio.h&gt;</span><span class="pln">
</span><span class="kwd">void</span><span class="pln"> main</span><span class="pun">()</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
</span><span class="kwd">int</span><span class="pln"> z</span><span class="pun">,</span><span class="pln"> x</span><span class="pun">=</span><span class="lit">5</span><span class="pun">,</span><span class="pln"> y</span><span class="pun">=</span><span class="pln"> </span><span class="pun">-</span><span class="lit">10</span><span class="pun">,</span><span class="pln"> a</span><span class="pun">=</span><span class="lit">4</span><span class="pun">,</span><span class="pln"> b</span><span class="pun">=</span><span class="lit">2</span><span class="pun">;</span><span class="pln">
z </span><span class="pun">=</span><span class="pln"> x</span><span class="pun">++</span><span class="pln"> </span><span class="pun">-</span><span class="pln"> </span><span class="pun">--</span><span class="pln">y</span><span class="pun">*</span><span class="pln">b</span><span class="pun">/</span><span class="pln">a</span><span class="pun">;</span><span class="pln">
printf</span><span class="pun">(</span><span class="str">"%d"</span><span class="pun">,</span><span class="pln"> z</span><span class="pun">);</span><span class="pln">
</span><span class="pun">}</span>

A. 6
B. 7
C. 8
D. 10

Correct Option: D
Remarks:

Explanation: Option D

Q: What will be the output of the program?

<span class="pln">
</span><span class="com">#include</span><span class="str">&lt;stdio.h&gt;</span><span class="pln">

</span><span class="kwd">int</span><span class="pln"> main</span><span class="pun">()</span><span class="pln">
</span><span class="pun">{</span><span class="pln">
    printf</span><span class="pun">(</span><span class="str">"%d %d\n"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&lt;&lt;</span><span class="lit">1</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&lt;&lt;</span><span class="lit">0</span><span class="pun">);</span><span class="pln">
    printf</span><span class="pun">(</span><span class="str">"%d %d\n"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&lt;&lt;-</span><span class="lit">1</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&lt;&lt;-</span><span class="lit">0</span><span class="pun">);</span><span class="pln">
    printf</span><span class="pun">(</span><span class="str">"%d %d\n"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&gt;&gt;</span><span class="lit">1</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&gt;&gt;</span><span class="lit">0</span><span class="pun">);</span><span class="pln">
    printf</span><span class="pun">(</span><span class="str">"%d %d\n"</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&gt;&gt;-</span><span class="lit">1</span><span class="pun">,</span><span class="pln"> </span><span class="lit">32</span><span class="pun">&gt;&gt;-</span><span class="lit">0</span><span class="pun">);</span><span class="pln">
    </span><span class="kwd">return</span><span class="pln"> </span><span class="lit">0</span><span class="pun">;</span><span class="pln">
</span><span class="pun">}</span>

A. Garbage values
B. 64 32<br>0 32<br>16 32<br> 0 32
C. All zeros
D. 8 0 <br>0 0 <br>32 0<br> 0 16

Correct Option: B
Remarks:

Explanation: Option B

Q: Which operator from the following has the lowest priority?

A. Assignment operator
B. Division operator
C. Comma operator
D. Conditional operator

Correct Option: C
Remarks:

Explanation: Option C

Q: Which of the following is an invalid assignment operator?

A. a %= 10;
B. a /= 10;
C. a |= 10;
D. None of the mentioned

Correct Option: D
Remarks:

Explanation: Answer: Option D <h4>Valid assignment operator </h4> <table class="table table-bordered table-hover"> <thead> <tr> <th>Operator</th> <th>Example</th> <th>Same as</th> </tr> </thead> <tbody> <tr> <td>=</td> <td>a = b</td> <td class="success">a = b</td> </tr> <tr> <td>+=</td> <td>a += b</td> <td class="success">a = a+b</td> </tr> <tr> <td>-=</td> <td>a -= b</td> <td class="success">a = a-b</td> </tr> <tr> <td>*=</td> <td>a *= b</td> <td class="success">a = a*b</td> </tr> <tr> <td>/=</td> <td>a /= b</td> <td class="success">a = a/b</td> </tr> <tr> <td>%=</td> <td>a %= b</td> <td class="success">a = a%b</td> </tr> <tr> <td>|=</td> <td>a |= b</td> <td class="success">a = a|b</td> </tr> </tbody> </table>

Q: What is the output of this C code?

    int main()
    {
        int c = 2 ^ 3;
        printf("%d\n", c);
    }

A. 1
B. 8
C. 9

Correct Option: A
Remarks:

Explanation: Option A

Q: Relational operators cannot be used on:

A. structure
B. long
C. strings
D. float

Correct Option: A
Remarks:

Explanation: <p> Answer: Option A </p> <p>The following table shows all the relational operators supported by C language. Assume variable <strong>A</strong> holds 10 and variable <strong>B</strong> holds 20 then −</p> <table class="table table-bordered"> <tbody> <tr> <th>Operator</th> <th>Description</th> <th>Example</th> </tr> <tr> <td class="ts">==</td> <td>Checks if the values of two operands are equal or not. If yes, then the condition becomes true.</td> <td class="ts">(A == B) is not true.</td> </tr> <tr> <td class="ts">!=</td> <td>Checks if the values of two operands are equal or not. If the values are not equal, then the condition becomes true.</td> <td class="ts">(A != B) is true.</td> </tr> <tr> <td class="ts">></td> <td>Checks if the value of left operand is greater than the value of right operand. If yes, then the condition becomes true.</td> <td class="ts">(A > B) is not true.</td> </tr> <tr> <td class="ts"><</td> <td>Checks if the value of left operand is less than the value of right operand. If yes, then the condition becomes true.</td> <td class="ts">(A < B) is true.</td> </tr> <tr> <td class="ts">>=</td> <td>Checks if the value of left operand is greater than or equal to the value of right operand. If yes, then the condition becomes true.</td> <td class="ts">(A >= B) is not true.</td> </tr> <tr> <td class="ts"><=</td> <td>Checks if the value of left operand is less than or equal to the value of right operand. If yes, then the condition becomes true.</td> <td class="ts">(A <= B) is true.</td> </tr> </tbody> </table>

Q: What is the output of this C code?

    int main()
    {
        int x = 1, y = 0, z = 3;
        x > y ? printf("%d", z) : return z;
    }

A. 3
B. 1
C. Compile time error
D. Run time error

Correct Option: C
Remarks:

Explanation: Option C

Q: What is the output of this C code?

    void main()
    {
        int x = 1, z = 3;
        int y = x << 3;
        printf(" %d\n", y);
    }

A. -2147483648
B. -1
C. Run time error
D. 8

Correct Option: D
Remarks:

Explanation: Option D

Introduction to Operator in C - Quiz

What is the value of x in this C code?

Which of the following data type will throw an error on modulus operation(%)?

What will be the output?

What will be the output of the program?

Which operator from the following has the lowest priority?

Which of the following is an invalid assignment operator?

What is the output of this C code?
int main() { int c = 2 ^ 3; printf("%d\n", c); }

Relational operators cannot be used on:

What is the output of this C code?
int main() { int x = 1, y = 0, z = 3; x > y ? printf("%d", z) : return z; }

What is the output of this C code?
void main() { int x = 1, z = 3; int y = x << 3; printf(" %d\n", y); }

Introduction to Operator in C - Quiz

Which of the following data type will throw an error on modulus operation(%)?

Which operator from the following has the lowest priority?

Which of the following is an invalid assignment operator?

What is the output of this C code? int main() { int c = 2 ^ 3; printf("%d\n", c); }

Relational operators cannot be used on:

What is the output of this C code? int main() { int x = 1, y = 0, z = 3; x > y ? printf("%d", z) : return z; }

What is the output of this C code? void main() { int x = 1, z = 3; int y = x << 3; printf(" %d\n", y); }

What is the output of this C code?
int main() { int c = 2 ^ 3; printf("%d\n", c); }

What is the output of this C code?
int main() { int x = 1, y = 0, z = 3; x > y ? printf("%d", z) : return z; }

What is the output of this C code?
void main() { int x = 1, z = 3; int y = x << 3; printf(" %d\n", y); }