250+ TOP MCQs on Random Number Generation and Answers [2024]

C Objective Questions on “Random Number Generation”. One shall practice these Objective Questions to improve their C programming skills needed for various interviews (campus interviews, walkin interviews, company interviews), placements, entrance exams and other competitive exams. These questions can be attempted by anyone focusing on learning C Programming language. They can be a beginner, fresher, engineering graduate or an experienced IT professional. Our C Objective Questions come with detailed explanation of the answers which helps in better understanding of C concepts.

Here is a listing of C Objective Questions on “Random Number Generation” along with answers, explanations and/or solutions:

1. What will be the output of the following C code?

```
    #include 
```
```
    #include 
```
```
    int main()
```
```
    {
```
```
        printf("%dn", 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
Answer: c
Clarification: None.

2. What will be the output of the following C code?

```
    #include 
```
```
    #include 
```
```
    int main()
```
```
    {
```
```
        srand(9000);
```
```
        printf("%dn", 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
Answer: b
Clarification: None.

3. What will be the output of the following C code?

```
    #include 
```
```
    int main()
```
```
    {
```
```
        printf("%dn", 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
Answer: a
Clarification: None.

4. What will be the output of the following C code?

```
    #include 
```
```
    int main()
```
```
    {
```
```
        srand(time(NULL));
```
```
        printf("%dn", 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
Answer: b
Clarification: None.

5. In the below C program, every time program is run different numbers are generated.

```
    #include 
```
```
    #include 
```
```
    int main()
```
```
    {
```
```
        printf("%dn", rand());
```
```
        return 0;
```
```
    }
```

a) True
b) False
c) Depends on the platform
d) Depends on the compiler
Answer: b
Clarification: None.

6. In the following C program, every time program is run different numbers are generated.

```
    #include 
```
```
    int main()
```
```
    {
```
```
        srand(time(NULL));
```
```
        printf("%dn", rand());
```
```
        return 0;
```
```
    }
```

a) True
b) False
c) Depends on the platform
d) Depends on the compiler
Answer: a
Clarification: None.

7. 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
Answer: a
Clarification: None.

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