C Programming – Random Number Generation

C Programming - Random Number Generation

Question 1

The function srand(unsigned)

A	Sets the seed for rand
B	Doesn’t exist
C	Is an error
D	None of the mentioned

Question 2

Which is the best way to generate numbers between 0 to 99?

A	rand()-100
B	rand()%100
C	rand(100)
D	srand(100)

Question 3

 The correct way to generate numbers between minimum and maximum(inclusive) is _____________________.

A	minimum + (rand() % (maximum – minimum));
B	minimum + (rand() % (maximum – minimum + 1));
C	minimum * (rand() % (maximum – minimum))
D	minimum – (rand() % (maximum+minimum));

Question 4

 rand() and srand() functions are used

A	To find sqrt
B	For and operations
C	For or operations
D	To generate random numbers

Question 5

What is the return type of rand() function?

A	short
B	int
C	long
D	double

Question 6

 Which of the following can be used for random number generation?

A	random()
B	rnd()
C	rndm()
D	None of the mentioned

Question 7

Which of the following snippet will effectively generate random numbers?

A	rand();
B	rand(10);
C	rand(time(NULL));
D	All of the mentioned

Question 8

Which among the following is correct function call for rand and random?

A	rand() and random();
B	rand() and random(1);
C	rand(1) and random(1);
D	rand(1) and random();

Question 9

 For the function call time(), what type of parameter is accepted?

A	int
B	int *
C	time_t
D	time_t *

Question 10

What is the output of this C code?

    #include 
    #include 
    int main()
    {
    printf("%d\n", rand() % 1000);
    return 0;
    }

A	Compile time error
B	An integer between 0-1000
C	An integer between 0-999 including 0 and 999.
D	An integer between 0-1000 including 1000

Question 11

What is the output of this C code?

    #include 
    #include 
    int main()
    {
    srand(9000);
    printf("%d\n", rand());
    return 0;
    }

A	Compile time error
B	An integer in the range 0 to RAND_MAX.
C	A double in the range 0 to 1
D	A float in the range 0 to 1.

Question 12

What is the output of this C code?

    #include 
    int main()
    {
    printf("%d\n", srand(9000));
    return 0;
    }

A	Compile time error
B	An integer in the range 0 to 9000
C	A float in the range 0 to 1
D	A double in the range 0 to 9000

Question 13

What is the output of this C code?

    #include 
    int main()
    {
    srand(time(NULL));
    printf("%d\n", rand());
    return 0;
    }

A	Compile time error
B	An integer in the range 0 to RAND_MAX.
C	A double in the range 0 to 1
D	A float in the range 0 to 1.

Question 14

 In the below program everytime program is run different numbers are generated.

A	true
B	false
C	Depends on the platform
D	Depends on the compiler

Question 15

In the below program everytime program is run different numbers are generated.

    #include 
    int main()
    {
    srand(time(NULL));
    printf("%d\n", rand());
    return 0;
    }

A	true
B	false
C	Depends on the platform
D	Depends on the compiler

Question 16

Which of these is a correct way to generate numbers between 0 to 1(inclusive) randomly?

A	rand() / RAND_MAX
B	rand() % 2
C	rand(0, 1)
D	None of the mentioned

Check Your Answers:

  1. A

  2. B

  3. B

  4. D

  5. B

  6. A

  7. A

  8. A

  9. D

10. C

11. B

12. A

13. B

14. B

15. A

16. A

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