C INTERVIEW QUESTIONS AND ANSWERS PDF FOR FRESHER
Mar 19, 1) How do you construct an increment statement or decrement statement in C? There are actually two ways you can do this. One is to use the. C interview questions are given with the answers in this website. We have given C interview questions faced by freshers and experienced in real interviews in IT. Commonly Asked C Programming Interview Questions | Set 1. What is the See print “Geeks for Geeks” without using a semicolon for answer. When should we.
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C Interview Questions and Answers for Freshers or Experienced Pdf. These Questions are frequently asked in all Upcoming Entrance Exams and Bank IBPS . Mar 24, C language allows the use of the prefix register in primitive variable declarations. Such variables are called Read Top C programming interview questions and answers. Download C programming interview questions PDF. C Programming Interview Questions - Learn ANSI, GNU and K/R standard of C subject and later they continue based on further discussion and what you answer − .. If you are fresher then interviewer does not expect you will answer very.
Interpreters execute program codes one line at a time, while compilers take the program as a whole and convert it into object code, before executing it. The key difference here is that in the case of interpreters, a program may encounter syntax errors in the middle of execution, and will stop from there. On the other hand, compilers check the syntax of the entire program and will only proceed to execution when no syntax errors are found.
The char keyword can only hold 1 character value at a time. By creating an array of characters, you can store string values in it. While curly brackets are mainly used to group several lines of codes, it will still work without error if you used it for a single line. Some programmers prefer this method as a way of organizing codes to make it look clearer, especially in conditional statements. Header files are also known as library files. They contain two essential things: Simply put, commands that you use in C programming are actually functions that are defined from within each header files.
Each header file contains a set of functions. Syntax errors are associated with mistakes in the use of a programming language. It maybe a command that was misspelled or a command that must was entered in lowercase mode but was instead entered with an upper case character.
A misplaced symbol, or lack of symbol, somewhere within a line of code can also lead to syntax error. Variables and constants may at first look similar in a sense that both are identifiers made up of one character or more characters letters, numbers and a few allowable symbols. Both will also hold a particular value. Values held by a variable can be altered throughout the program, and can be used in most operations and computations.
Constants are given values at one time only, placed at the beginning of a program. This value is not altered in the program. For example, you can assigned a constant named PI and give it a value 3. You can then use it as PI in the program, instead of having to write 3. Arrays contain a number of elements, depending on the size you gave it during variable declaration.
Each element is assigned a number from 0 to number of elements To assign or retrieve the value of a particular element, refer to the element number. Since each header file contains different function definitions and prototype, you would be using only those header files that would contain the functions you will need.
Declaring all header files in every program would only increase the overall file size and load of the program, and is not considered a good programming style. When declaring functions, you will decide whether that function would be returning a value or not. Compound statements are made up of two or more program statements that are executed together. Compound statements can also be executed within a loop.
Before a program can be written, an algorithm has to be created first.
An algorithm provides a step by step procedure on how a solution can be derived. It also acts as a blueprint on how a program will start and end, including what process and computations are involved. When storing multiple related data, it is a good idea to use arrays. This is because arrays are named using only 1 word followed by an element number.
With arrays, only 1 name is used, the rest are accessible through the index name grade, grade, grade… grade. This is a common mistake for programmers, often leading to logical errors. Random numbers are generated in C using the rand command. The most probable reason behind this error is that the header file for that function was not indicated at the top of the program.
Header files contain the definition and prototype for functions and commands used in a C program. Comments are a great way to put some remarks or description in a program. It can serves as a reminder on what the program is all about, or a description on why a certain code or function was placed there in the first place.
Comments can be a single line, or can even span several lines. It can be placed anywhere in the program. Debugging is the process of identifying errors within a program. During program compilation, errors that are found will stop the program from executing completely. At this state, the programmer would look into the possible portions where the error occurred. Debugging ensures the removal of errors, and plays an important role in ensuring that the expected program output is met. When using this operator, all conditions specified must be TRUE before the next action can be performed.
There is no single command or function in C that can check if a number is odd or even. However, this can be accomplished by dividing that number by 2, then checking the remainder. If the remainder is 0, then that number is even, otherwise, it is odd. You can write it in code as:. This format is used for two things: The number before the decimal point is for the allotted space, in this case it would allot 10 spaces for the output number. If the number of space occupied by the output number is less than 10, addition space characters will be inserted before the actual output number.
Program that contains logical errors tend to pass the compilation process, but the resulting output may not be the expected one. This happens when a wrong formula was inserted into the code, or a wrong sequence of commands was performed.
Syntax errors, on the other hand, deal with incorrect commands that are misspelled or not recognized by the compiler.
There are 3 main control structures in programming: Sequence, Selection and Repetition. Sequential control follows a top to bottom flow in executing a program, such that step 1 is first perform, followed by step 2, all the way until the last step is performed. This also means that not all codes may be executed, and there are alternative flows within. Repetitions are also known as loop structures, and will repeat one or two program statements set by a counter. The is also known as the OR operator in C programming.
For comparing string values, there is another function called strcmp that deals specifically with strings. Preprocessor directives are placed at the beginning of every C program.
This is where library files are specified, which would depend on what functions are to be used in the program. Another use of preprocessor directives is the declaration of constants. Preprocessor directives begin with the symbol. The outcome will be TRUE. Just the same, s! Order of precedence determines which operation must first take place in an operation statement or conditional statement.
On the top most level of precedence are the unary operators!
Top 40 C Programming Interview Questions and Answers
Instead, use the strcpy function. The correct statement would be: To get the length of a string value, use the function strlen. For example, if you have a variable named FullName, you can get the length of the stored string value by using this statement: This is because C language is rich in features that make it behave like a high level language while at the same time can interact with hardware using low level methods. What is recursion in C?
Advantages of using recursion: Is there any demerits of using pointer? List some basic data types in C? In Programming Languages data types are used to define a variable before its use. Below are list of some basic data types in C language. Plays a role of generic data type. What is a void pointer? What do you understand by normalization of pointers?
Explain continue keyword in C. List some applications of C programming language? Application of C Programming Language To develop embedded software It is to create a computer application It is effective to create a compiler for various computer languages to convert them into low-level language that is the machine understandable language.
It is used for creating software for various applications and even hardware. What is the difference between constant pointer and constant variable?
It was created by Bjarne Stroustrup. Declaration of global multiple values are accepted. No multiple global value declaration is permitted. C supports procedural style programming.
It supports both Object-oriented as well as Procedural programming. C doesn't supports namespace.
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C Interview questions pdf and answers Freshers experienced.pdf
Core Java interview questions. Which is the quickest searching method? When should type cast not be used in C? What is difference between function and built in function in C?
What is difference between linker and linkage? Which one nested if or switch statement is easy to use when we have more than 2 conditional expressions in C? What is argument in C? What is the difference between actual argument and formal argument in C language? What is the difference between internal and external static variables in C? What is modular programming? What is indirection in C? What is the difference between array and pointer in C?
How many ways a pointer variable can be initialized in C? What is difference between text and binary modes in C? What is difference between structure and union in C?
What is difference between structure and array in C? Is function declared or defined in header files in C? Where is extern, static and auto variable stored in memory? Where is register variable stored in memory? What is difference between for loop and while loop in C? Which data type a pointer variable belonging to in C? What is array of pointer or pointer array in C? Can a C program have more than one main function?
Read Top C programming interview questions and answers
Can a structure have a pointer to itself in C? What is file in C? What are the types of files in C? What is file pointer in C? What is the difference between array of pointer and pointer to array in C? What is fopen , fclose in C? What is ftell in C? What is difference between constant pointer and pointer to a constant in C?
Can main function be called recursively in C? Can we compare 2 same structures in C? What is difference between syntax error and logical error in C? Is it correct to include all header files in a C program?
How will you print back slash character in C? What is the difference between single and compound statements in C? Is it possible to pass entire structure to a function in C? Is macro better than function in C programming? Is using goto statement a best practice in C programming? What is the difference between break and continue statement in C?
True or false? C is not case sensitive. Which header file needs to be included in C program to use printf and scanf functions? What is the difference between gets and fgets in C? What is data type in C language? What are the basic data types in C language? Which is used to fine the size of variable, array in C?
Answer — data type What is int, char and floating point in C? What is the storage size of long long int in 16 bit processor in C?
What is the storage size of long long int in 32 bit processor in C? What is the syntax for enum in C? What are derived data types in C? What are the types of tokens in C? What is keyword in C?It is a format specifier used to display a floating point value.
What is identifier in C? Life of a variable exists until the program is executing.
It is possible to find out the allocation of register variables only by executing and comparing the performance with respect to the time taken by the program perceptible in large programs. C is a mid-level programming language as it combines the low- level language with the features of the high-level language.
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