250+ TOP MCQs on Functions Returning Non-integers and Answers [2024]

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Here is a listing of online C test questions on “Functions Returning Non-integers” along with answers, explanations and/or solutions:

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

```
    #include 
```
```
    int *m();
```
```
    void main()
```
```
    {
```
```
        int k = m();
```
```
        printf("%d", k);
```
```
    }
```
```
    int *m()
```
```
    {
```
```
        int a[2] = {5, 8};
```
```
        return a;
```
```
    }
```

a) 5
b) 8
c) Nothing
d) Varies
Answer: d
Clarification: None.

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

```
    #include 
```
```
    void m(int k)
```
```
    {
```
```
        printf("hi");
```
```
    }
```
```
    void m(double k)
```
```
    {
```
```
        printf("hello");
```
```
    }
```
```
    void main()
```
```
    {
```
```
        m(3);
```
```
    }
```

a) hi
b) hello
c) Compile time error
d) Nothing
Answer: c
Clarification: None.

3. What is the default return type if it is not specified in function definition?
a) void
b) int
c) double
d) short int
Answer: b
Clarification: None.

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

```
    #include 
```
```
    int foo();
```
```
    int main()
```
```
    {
```
```
        int i = foo();
```
```
    }
```
```
    foo()
```
```
    {
```
```
        printf("2 ");
```
```
        return 2;
```
```
    }
```

a) 2
b) Compile time error
c) Depends on the compiler
d) Depends on the standard
Answer: a
Clarification: None.

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

```
    #include 
```
```
    double foo();
```
```
    int main()
```
```
    {
```
```
        foo();
```
```
        return 0;
```
```
    }
```
```
    foo()
```
```
    {
```
```
        printf("2 ");
```
```
        return 2;
```
```
    }
```

a) 2
b) Compile time error
c) Depends on the compiler
d) Depends on the standard
Answer: b
Clarification: None.

6. Functions can return structure in C?
a) True
b) False
c) Depends on the compiler
d) Depends on the standard
Answer: a
Clarification: None.

7. Functions can return enumeration constants in C?
a) true
b) false
c) depends on the compiler
d) depends on the standard
Answer: a
Clarification: None.

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

```
    #include 
```
```
    enum m{JAN, FEB, MAR};
```
```
    enum m foo();
```
```
    int main()
```
```
    {
```
```
        enum m i = foo();
```
```
        printf("%dn", i);
```
```
    }
```
```
    int  foo()
```
```
    {
```
```
        return JAN;
```
```
    }
```

a) Compile time error
b) 0
c) Depends on the compiler
d) Depends on the standard
Answer: a
Clarification: None.

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