250+ TOP MCQs on Type Conversions and Answers [2024]

C helps anyone preparing for Sasken and other companies C interviews. One should practice these Objective Questions and answers continuously for 2-3 months to clear Sasken interviews on C Programming language.

Here is a listing of C programming Objective Questions on “Type Conversions” along with answers, explanations and/or solutions:

1. function tolower(c) defined in library works for ___________
a) Ascii character set
b) Unicode character set
c) Ascii and utf-8 but not EBCDIC character set
d) Any character set
Answer: d
Clarification: None.

2. What will be the output of the following C code considering the size of a short int is 2, char is 1 and int is 4 bytes?

```
    #include 
```
```
    int main()
```
```
    {
```
```
        short int i = 20;
```
```
        char c = 97;
```

        printf("%d, %d, %dn", sizeof(i), sizeof(c), sizeof(c + i));

```
        return 0;
```
```
    }
```

a) 2, 1, 2
b) 2, 1, 1
c) 2, 1, 4
d) 2, 2, 8
Answer: c
Clarification: None.

3. Which type of conversion is NOT accepted?
a) From char to int
b) From float to char pointer
c) From negative int to char
d) From double to char
Answer: b
Clarification: Conversion of a float to pointer type is not allowed.

4. What will be the data type of the result of the following operation?

(float)a * (int)b / (long)c * (double)d

a) int
b) long
c) float
d) double
Answer: d
Clarification: None.

5. Which of the following type-casting have chances for wrap around?
a) From int to float
b) From int to char
c) From char to short
d) From char to int
Answer: b
Clarification: None.

6. Which of the following typecasting is accepted by C?
a) Widening conversions
b) Narrowing conversions
c) Widening & Narrowing conversions
d) None of the mentioned
Answer: c
Clarification: None.

7. When do you need to use type-conversions?
a) The value to be stored is beyond the max limit
b) The value to be stored is in a form not supported by that data type
c) To reduce the memory in use, relevant to the value
d) All of the mentioned
Answer: d
Clarification: None.

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