C Programming Test (Random Questions)

C Programming Test (Random Questions) - Computer Science & Engineering

Instruction:

This is a FREE online test. DO NOT pay money to anyone to attend this test.
Total number of questions : 20.
Time alloted : 30 minutes.
Each question carry 1 mark, no negative marks.
DO NOT refresh the page.
All the best :-).

Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

	A.	rem = 3.14 % 2.1;
	B.	rem = modf(3.14, 2.1);
	C.	rem = fmod(3.14, 2.1);
	D.	Remainder cannot be obtain in floating point division.

Your Answer: Option

Correct Answer: Option C

Explanation:

fmod(x,y) - Calculates x modulo y, the remainder of x/y.
This function is the same as the modulus operator. But fmod() performs floating point divisions.

Example:

#include 
#include 

int main ()
{
  printf ("fmod of 3.14/2.1 is %lf\n", fmod (3.14,2.1) );
  return 0;
}

Output:
fmod of 3.14/2.1 is 1.040000

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Does there any function exist to convert the int or float to a string?

	A.	Yes
	B.	No

Your Answer: Option

Correct Answer: Option A

Explanation:

1. itoa() converts an integer to a string.
2. ltoa() converts a long to a string.
3. ultoa() converts an unsigned long to a string.
4. sprintf() sends formatted output to a string, so it can be used to convert any type of values to string type.

#include<stdio.h>
#include<stdlib.h>

int main(void)
{
   int   num1 = 12345;
   float num2 = 5.12;
   char str1[20];
   char str2[20];

   itoa(num1, str1, 10); /* 10 radix value */
   printf("integer = %d string = %s \n", num1, str1);

   sprintf(str2, "%f", num2);
   printf("float = %f string = %s", num2, str2);

   return 0;
}

// Output:
// integer = 12345 string = 12345
// float = 5.120000 string = 5.120000

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In which order do the following gets evaluated

1.Relational

2.Arithmetic

3.Logical

4.Assignment

	A.	2134
	B.	1234
	C.	4321
	D.	3214

Your Answer: Option

Correct Answer: Option A

Explanation:

2. Arithmetic operators: *, /, %, +, -
1. Relational operators: >, <, >=, <=, ==, !=
3. Logical operators : !, &&, ||
4. Assignment operators: =

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You have an interface on a router with the IP address of 192.168.192.10/29. Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

	A.	6
	B.	8
	C.	30
	D.	32

Your Answer: Option

Correct Answer: Option A

Explanation:

A /29 (255.255.255.248), regardless of the class of address, has only 3 host bits. Six hosts is the maximum number of hosts on this LAN, including the router interface.

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Which of the following statements are correct about static functions?

	A.	Static functions are invoked using objects of a class.
	B.	Static functions can access static data as well as instance data.
	C.	Static functions are outside the class scope.
	D.	Static functions are invoked using class.

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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Port Address Translation is also termed what?

	A.	NAT Fast
	B.	NAT Static
	C.	NAT Overload
	D.	Overloading Static

Your Answer: Option

Correct Answer: Option C

Explanation:

Another term for port address translation is NAT Overload because that is the command used to enable port address translation.

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What DOS program can you run to see which serial ports are detected?

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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Which of the following also known as an instance of a class?

	A.	Friend Functions
	B.	Object
	C.	Member Functions
	D.	Member Variables

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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The three-schema components include all, but:

	A.	internal schema.
	B.	conceptual schema.
	C.	programming schema.
	D.	external schema.

Your Answer: Option

Correct Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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10.

Controls of data communication deal with

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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11.

The SQL WHERE clause:

	A.	limits the column data that are returned.
	B.	limits the row data are returned.
	C.	Both A and B are correct.
	D.	Neither A nor B are correct.

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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12.

The DBA is

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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13.

Of the three ways to pass arguments to functions, only passing by _____ and passing by _____ allow the function to modify the argument in the calling program

	A.	reference, pointer
	B.	array, location
	C.	array, pointer
	D.	None of the above

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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14.

A _____ decision is routine one that's made following the completion of a preplanned series of steps.

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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15.

You type the following command into the router and receive the following output:

Router#show serial 0/0
        ^
% Invalid input detected at '^' marker.

Why was this error message displayed?

	A.	You need to be in privileged mode.
	B.	You cannot have a space between serial and 0/0.
	C.	The router does not have a serial0/0 interface.
	D.	Part of the command is missing.

Your Answer: Option

Correct Answer: Option D

Explanation:

You can view the interface statistics from user mode, but the command is show interface serial 0/0.

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16.

Doubling the operating voltage of a purely capacitive circuit:

	A.	has no effect on the capacitive reactance
	B.	doubles the amount of capacitive reactance
	C.	multiplies the capacitive reactance by 7
	D.	cuts the capacitive reactance in half
	E.	None of the above

Your Answer: Option

Correct Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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17.

Which peripheral port provides the FASTEST throughput to laser printers?

Your Answer: Option

Correct Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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18.

Which of the following statements is correct about the constructors and destructors?

	A.	Destructors can take arguments but constructors cannot.
	B.	Constructors can take arguments but destructors cannot.
	C.	Destructors can be overloaded but constructors cannot be overloaded.
	D.	Constructors and destructors can both return a value.

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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19.

The axis of movement of a robot may include:

Your Answer: Option

Correct Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

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20.

Who made the statement "if a robot can do a job, a person should not be doing it"?

	A.	Prof. F. A. Fisher of Britain
	B.	Ron Albo of Shugart Associates, California
	C.	Prof. Meredith Turing, London University
	D.	John Smith, USA
	E.	None ,of the above

Your Answer: Option

Correct Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

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