Top C Programming Interview Questions & Answers. last updated March 19, /13 . In C programming, source codes are saved with the file extension.C, while object codes are saved with the file .. Download PDF · Facebook Twitter. C Interview Questions and Answers. What is C language? The C programming language is a standardized programming language developed in the early s . C language allows the use of the prefix register in primitive variable declarations. Download C programming interview questions PDF.
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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 . Frequently asked C interview questions with answers and detailed explanations for technical interviews in pdf. Download PDF to practice important C programs. Moreover, many interview questions have different solutions. This book popular programming languages (C, C++, C#, and Java) are discussed in Chapter 2.
Modularity — Possibility to break down large programs into small modules. Flexibility — The possibility to a programmer to control the language. Speed — C comes with support for system programming and hence it is compiling and executes with high speed when comparing with other high-level languages. Extensibility — Possibility to add new features by the programmer.
Q 2 What are the basic data types associated with C? Int — Represent number integer Float — Number with a fraction part. Double — Double-precision floating point value Char — Single character Void — Special purpose type without any value. Q 3 What is the description for syntax errors? Ans The mistakes when creating a program called syntax errors. Q 4 What is the process to create increment and decrement stamen in C? Ans There are two possible methods to perform this task. Q 5 What are reserved words with a programming language?
Ans The words that are part of the slandered C language library are called reserved words. Those reserved words have special meaning and it is not possible to use them for any activity other than its intended functionality. Example void, return, int. Q 6 What is the explanation for the dangling pointer in C?
Ans When there is a pointer with pointing to a memory address of any variable, but after some time the variable was deleted from the memory location while keeping the pointer pointing to that location.
Q 7 Describe static function with its usage? 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: the definitions and prototypes of functions being used in a program. 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.
For example: stdio. 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. 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. 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 Another use of preprocessor directives is the declaration of constants. Preprocessor directives begin with the symbol. Just the same, s! Order of precedence determines Explain Which operation must first take place in an operation statement or conditional statement.
On the top most level of precedence are the unary operators!
Instead, use the strcpy function. To get the length of a string value, use the function strlen. 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.
The use of a well structured approach to programming, coupled with English-like words used in functions, makes it act as a high level language. On the other hand, C can directly access memory structures similar to assembly language routines. Source codes in C are saved with. C file extension. Header files or library files have the. H file extension.
Every time a program source code is successfully compiled, it creates an. OBJ object file, and an executable. EXE file.
Reserved words are words that are part of the standard C language library. This means that reserved words have special meaning and therefore cannot be used for purposes other than Explain What it is originally intended for.
Examples of reserved words are int, void, and return. A linked list is composed of nodes that are connected with another. In C programming, linked lists are created using pointers.
Using linked lists is one efficient way of utilizing memory for storage. In C programming, there is a data structure known as queue. A queue represents a line wherein the first data that was stored will be the first one that is accessible as well. Binary trees are actually an extension of the concept of linked lists.
A binary tree has two pointers, a left one and a right one.