250+ TOP MCQs on Switch Statements and Answers [2024]

C Objective Questions on “Switch Statements”. 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 “Switch Statements” along with answers, explanations and/or solutions:

1. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

```
    #include 
```
```
    void main()
```
```
    {
```
```
        double ch;
```

        printf("enter a value between 1 to 2:");

```
        scanf("%lf", &ch);
```
```
        switch (ch)
```
```
        {
```
```
           case 1:
```
```
              printf("1");
```
```
              break;
```
```
           case 2:
```
```
              printf("2");
```
```
              break;
```
```
        }
```
```
    }
```

a) Compile time error
b) 1
c) 2
d) Varies
Answer: a
Clarification: None.

2. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

```
    #include 
```
```
    void main()
```
```
    {
```
```
        char *ch;
```

        printf("enter a value between 1 to 3:");

```
        scanf("%s", ch);
```
```
        switch (ch)
```
```
        {
```
```
           case "1":
```
```
              printf("1");
```
```
              break;
```
```
           case "2":
```
```
              printf("2");
```
```
              break;
```
```
        }
```
```
    }
```

a) 1
b) Compile time error
c) 2
d) Run time error
Answer: b
Clarification: None.

3. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

```
    #include 
```
```
    void main()
```
```
    {
```
```
        int ch;
```

        printf("enter a value between 1 to 2:");

```
        scanf("%d", &ch);
```
```
        switch (ch)
```
```
        {
```
```
           case 1:
```
```
              printf("1n");
```
```
           default:
```
```
              printf("2n");
```
```
        }
```
```
    }
```

a) 1
b) 2
c) 1 2
d) Run time error
Answer: c
Clarification: None.

4. What will be the output of the following C code? (Assuming that we have entered the value 2 in the standard input)

```
    #include 
```
```
    void main()
```
```
    {
```
```
        int ch;
```

        printf("enter a value between 1 to 2:");

```
        scanf("%d", &ch);
```
```
        switch (ch)
```
```
        {
```
```
           case 1:
```
```
              printf("1n");
```
```
              break;
```
```
              printf("hi");
```
```
           default:
```
```
              printf("2n");
```
```
        }
```
```
    }
```

a) 1
b) hi 2
c) Run time error
d) 2
Answer: d
Clarification: None.

5. What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input)

```
    #include 
```
```
    void main()
```
```
    {
```
```
        int ch;
```

        printf("enter a value between 1 to 2:");

```
        scanf("%d", &ch);
```
```
        switch (ch, ch + 1)
```
```
        {
```
```
           case 1:
```
```
              printf("1n");
```
```
              break;
```
```
           case 2:
```
```
              printf("2");
```
```
              break;
```
```
        }
```
```
    }
```

a) 1
b) 2
c) 3
d) Run time error
Answer: b
Clarification: None.

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

```
    #include 
```
```
    int main()
```
```
    {
```
```
        int a = 1, b = 1;
```
```
        switch (a)
```
```
        {
```
```
           case a*b:
```
```
              printf("yes ");
```
```
           case a-b:
```
```
              printf("non");
```
```
              break;
```
```
        }
```
```
    }
```

a) yes
b) no
c) Compile time error
d) yes no
Answer: c
Clarification: None.

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

```
    #include 
```
```
    int main()
```
```
    {
```
```
        int x = 97;
```
```
        switch (x)
```
```
        {
```
```
           case 'a':
```
```
              printf("yes ");
```
```
              break;
```
```
           case 97:
```
```
              printf("non");
```
```
              break;
```
```
        }
```
```
    }
```

a) yes
b) yes no
c) Duplicate case value error
d) Character case value error
Answer: c
Clarification: None.

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

```
    #include 
```
```
    int main()
```
```
    {
```
```
        float f = 1;
```
```
        switch (f)
```
```
        {
```
```
           case 1.0:
```
```
              printf("yesn");
```
```
              break;
```
```
           default:
```
```
              printf("defaultn");
```
```
        }
```
```
    }
```

a) yes
b) yes default
c) Undefined behaviour
d) Compile time error
Answer: d
Clarification: None.

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