Question

i have an c program exam , i need to prepare for it , as you are experts , can you provide me with list of exams questions with answers so i can revise.

Answer 1

1) Which is user defined data type ?

a) integer

b) Structure

c) Enum

Answer is A. So integer and enums are the inbuilt data types and cannot be redefined by the user.

2) what is declaration and definition in C program.

In declaration we assume data type to the variable.

In definition the value is assigned to the variable.

3) When will we be mention the prototype of a function in c?

We can only mention the prototype during the declaration of the function.

4) If we give a value to an array with higher subscript value than the size what happens?

If we assign the value to a higher subscript value than the size the program might crash during the execution and comes with an overflow error.

5) What happens if you pass the array to a function?

In C language only the base address is passed, so changes made to the array will be reflected in the arrays.

6) Fucntion to open a file

fopen is a function that helps to open a file by passing the file path to it together with mode.

7) How to print float and double value to the console.

%f and %lf are used for float and double values respectively.

8) Header file for input and output functions are

stdio.h It is the inbuilt library file used for input and output operations in c language.

9) Purpose of return function

It transfers control from the called function back to the calling function.

10) What are pointers?

It is a variable that stores the address of the another variable.