Functions MCQ in C - Sanfoundry

This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Functions”.

Pre-requisite for this C MCQ set: Advanced C Programming Video Tutorial.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        m();
```
```
        void m()
```
```
        {
```
```
            printf("hi");
```
```
        }
```
```
    }
```

a) hi
b) Compile time error
c) Nothing
d) Varies
View Answer

Answer: b
Explanation: None.

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

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```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        m();
```
```
    }
```
```
    void m()
```
```
    {
```
```
        printf("hi");
```
```
        m();
```
```
    }
```

a) Compile time error
b) hi
c) Infinite hi
d) Nothing
View Answer

Answer: c
Explanation: None.

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

```
    #include <stdio.h>
```
```
    void main()
```
```
    {
```
```
        static int x = 3;
```
```
        x++;
```
```
        if (x <= 5)
```
```
        {
```
```
            printf("hi");
```
```
            main();
```
```
        }
```
```
    }
```

a) Run time error
b) hi
c) Infinite hi
d) hi hi
View Answer

Answer: d
Explanation: None.

4. Which of the following is a correct format for declaration of function?
a) return-type function-name(argument type);
b) return-type function-name(argument type){}
c) return-type (argument type)function-name;
d) all of the mentioned
View Answer

Answer: a
Explanation: None.

5. Which of the following function declaration is illegal?
a) int 1bhk(int);
b) int 1bhk(int a);
c) int 2bhk(int*, int []);
d) all of the mentioned
View Answer

Answer: d
Explanation: None.

6. Which function definition will run correctly?
a)

   int sum(int a, int b)
   return (a + b);

   int sum(int a, int b)
   {return (a + b);}

   int sum(a, b)
   return (a + b);

d) none of the mentioned
View Answer

Answer: b
Explanation: None.

7. Can we use a function as a parameter of another function? [Eg: void wow(int func())].
a) Yes, and we can use the function value conveniently
b) Yes, but we call the function again to get the value, not as convenient as in using variable
c) No, C does not support it
d) This case is compiler dependent
View Answer

Answer: c
Explanation: None.

8. The value obtained in the function is given back to main by using ________ keyword.
a) return
b) static
c) new
d) volatile
View Answer

Answer: a
Explanation: None.

Sanfoundry Global Education & Learning Series – C Programming Language.

To practice all areas of C language, here is complete set of 1000+ Multiple Choice Questions and Answers.

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