If you are preparing for a Programming in C interview, then you have reached the right place.
Computer Science Engineering is a broad field of study that deals with the Programming in C.It is a fast-growing field that has many opportunities for career growth. A Programming in C interview is a type of interview that is designed to assess a candidate's knowledge of Computer Science Engineering . The purpose of the interview is to evaluate the candidate's knowledge and deep understanding of subject.
The interview may also assess the candidate's communication skills, such as the ability to present complex information in a clear and concise manner.
The Interview is typically conducted by a hiring manager or recruiter who has experience in the field. The interviewer will typically ask a series of questions about the candidate's background and experience. The interviewer will also ask about the candidate's strengths and weaknesses.
This list of interview questions in Programming in C includes basic-level, advanced-level, and program-based interview questions.
Here are the commonly asked question list of Programming in C (Computer Science Engineering) interview questions and answers that you must prepare for fresher as well as experienced candidates to get your dream job.
C is one of the oldest programming languages and was developed in 1972 by Dennis Ritchie. C is a mid-level and procedural programming language. C is known as a mother language because most of the compilers and JVMs are written in C language.
C is called a mid-level programming language because it binds the low level and high -level programming language.
It is a high-level, general-purpose, and structured programming language that is widely used in various tasks, such as developing system applications, desktop applications, operating systems as well as IoT applications.
When using
Call by Value : You are sending the value of a variable as parameter to a function.
Call by Reference : Sends the address of the variable.
Under Call by Value, the value in the parameter is not affected by whatever operation that takes place, while in the case of Call by Reference, values can be affected by the process within the function.
The main features of C language are given below:
Simple: C is a simple language because it follows the structured approach, i.e., a program is broken into parts
Portable: C is highly portable means that once the program is written can be run on any machine with little or no modifications.
Mid Level: C is a mid-level programming language as it combines the low- level language with the features of the high-level language.
Structured: C is a structured language as the C program is broken into parts.
Fast Speed: C language is very fast as it uses a powerful set of data types and operators.
Memory Management: C provides an inbuilt memory function that saves the memory and improves the efficiency of our program.
Extensible: C is an extensible language as it can adopt new features in the future.
printf(): The printf() function is used to print the integer, character, float and string values on to the screen.
Following are the format specifier:
scanf(): The scanf() function is used to take input from the user.
An operator is a symbol used to operate the values of variables. There is a wide range of operators used in C programming, including –
These are used to perform mathematical calculations such as addition, subtraction, multiplication, division, and modulus.
These are used to check the relation between two operands. If the relation is TRUE, it returns 1; If the relation is FALSE, It returns 0.
These are used in decision-making operations. If the expression is TRUE, it returns 1; if the expression is FALSE, it returns 0.
These are used to assign value to a variable. The most used assignment operator is ‘=’.
These are used to change the value of an operand (constant or variable) by 1.
These are used to perform bit-level operations between two variables.
Example: Bitwise OR, Bitwise AND
These are used in conditional expressions.
Example: ‘?:’ Conditional operator
There are some special operators in C used for:
sizeof(): Returns the size of the memory location
&: Returns the address of a memory location
*: Pointer of a variable
The differences between a local variable and global variable is
Declaration : A variable which is declared inside function or block is known as a local variable and a variable which is declared outside function or block is known as a global variable.
Scope : In Local variable. the scope of a variable is available within a function in which they are declared and in global variable the scope of a variable is available throughout the program.
Access : In local variable, variables can be accessed only by those statements inside a function in which they are declared and in global variable, any statement in the entire program can access variables.
Life : In local variable, life of a variable is created when the function block is entered and destroyed on its exit and in global variable, life of a variable exists until the program is executing.
Storage : In local variable, Variables are stored in a stack unless specified and in global variable the compiler decides the storage location of a variable.