The C programming language is a standardized programming language Visit jinzihao.info for more Interview Questions with Answers. Page 2. Look for Basic C jobs interview questions and answers page and understand the interview model to prepare in a strategic way so as to get best results in return. C is the general and basic programming language that will create a base for other programming languages. Read Top C programming interview questions and answers. Download C programming interview questions PDF.
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Top C Programming Interview Questions & Answers. last updated March .. The basic data types are int, char, and float. . Download PDF. C programming language was developed at Bell Laboratories in by Dennis Ritchie. C is structure/procedure oriented programming language whereas C++ is object oriented programming language. Polymorphism, virtual function, inheritance, Operator overloading, namespace concepts are. Frequently asked C interview questions with answers and detailed explanations for technical interviews in pdf. Download PDF to practice.
A record is made up of related fields. The process continues until an exit condition returns true. A program that uses register variables executes faster as compared to a similar program without register variables. What is a huge pointer? Source codes in C are saved with. This is in contrast to static data structure, wherein the programmer has to indicate a fix number of memory space to be used in the program. Anjali Dreamgirl says:
Differentiate between a for loop and a while loop?
What are it uses? What is storage class. What are the different storage classes in C? What the advantages of using Unions? What is the difference between Strings and Arrays? What is a far pointer? What is a huge pointer? What is a normalized pointer ,how do we normalize a pointer? There are approximately interview questions of C.
Candidates can prepare easily for interview by reading there question. Some of links are. Your email address will not be published. Notify me of follow-up comments by email. Notify me of new posts by email. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Email Address. Where Are They Stored?
The auto variables are stored in the main memory of the system. The keyword 'auto' is optional. Many of the variables used by the program or application are 'auto' variables, being the main memory is faster. These variables are stored in the memory runtime stack. It is de-allocated at the completion of its block execution. It is a local variable which is allocated and deallocated automatically when the program flow enters and leaves the variable's scope.
The difference between arrays and linked lists are: A set of named integer constants is known as an enumeration. The enumeration type declaration includes the name of the enumeration tag and the definition of a set of named integers.
Variables of enumeration type persists one of the existing values of the enumeration set. The enum type variables could be utilized in indexing expressions, as operands of all arithmetic and relational operators. ANSI C enum expressions are always have int type, which occupies the memory space that occupied by the int type. The identifier sunday is explicitly assigned with 0. The remaining identifiers are given values 1 through 5 by default.
The scope of a variable is specified by its storage allocation. This is specified by the keywords — auto, extern, static and register. The keyword typedef is used for defining user defined data types. A new definition of existing data types is created by using typedef.
It is used to define user defined identifiers which can be used in substitution of type specifiers such as int, float etc. It does not reserve memory space. The names defined by typedef are synonyms for the data types. If Possible How? The fgets function is safer to use.
It checks the bounds, i. The gets function does not check the bounds. The gets function is an insecure and careless use can lead to errors. The function strcpy will not allocate the memory space to copy. A pointer to the string to copy and a pointer to place to copy it to should be given. This memory space needs to be freed up later when it is of no use anymore. For char array, such size is not accepted by the compiler. Define Void Pointer? A void pointer is pointer which has no specified data type.
It is also known as a generic pointer. The void pointer can be pointed to any type. If needed, the type can be cast. A void pointer is generally used as function parameters, when the parameter or return type is unknown. What Is A Const Pointer? A const pointer is not the pointer to constant, it is the constant. In the above example it is not, Hence it is not the pointer to constant. The ptr can not be used to point to another integer.
The integer pointed by ptr can be changed. The const pointer can not be changed to point to other memory location, because the pointer is constant. Explain Memory Leak?
An unwanted increase in programs is referred to as a memory leak is C language. The intake of the program increases in the memory by an unintentional consumption of the memory. If the program is getting corrupted and results in errors, it means the memory leak. In case there is a leak by any program, the function of the system may stop and violate operating system files.
It is the gradual loss of available computer memory when a program repeatedly fails to return memory that it has obtained for temporary use. It becomes exhausted and the program becomes no longer to perform properly. It is the result of a program bug. Static Memory Allocation: Memory is allocated for the declared variable by the compiler.
The memory is allocated during compile time. Since most of the declared variables have static memory, this kind of assigning the address of a variable to a pointer is known as static memory allocation. Dynamic Memory Allocation: Allocation of memory at the time of execution run time is known as dynamic memory allocation. The functions calloc and malloc support allocating of dynamic memory.
Dynamic allocation of memory space is done by using these functions when value is returned by functions and assigned to pointer variables. The execution of the program always starts with main function. A define is used as immediate constant or as a macro. Where as the constant is a variable whose value can not change. Pointer can be declared to a constant, but not for define.
Where as the constant can be global. There are four storage classes in C. Unary operator is not applied for register variable. Define Register Variables. The variables of 'register' type modifier inform the compiler for storing the variables in a register of the CPU. These variables are stored in the registers, so the speed of processing is become more than the normal variables.
Advantages of Register variable: C Tutorial. Basic C Practice Tests. What does printf does? When can you use a pointer with a function? A pointer can be used with a function- When an address is to be passed to a function When an array elements are to be accessed through a function.
Passing base address will give access to the whole array.
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. Subscribe Our NewsLetter.