The C programming language was developed between 1969 and 1973 by Dennis Ritchie at Bell Labs. He uses this new programming language to re implement the UNIX operating system.
Also Read: List of C Language Programs for Beginners
C is a high-level structured oriented programming language used for general purpose programming needs. Basically, C is a collection of its library functions. The main uses of the C programming language include language compilers, operating systems, assemblers, text editors, print spoolers, network drivers, modern programs, data bases, language interpreters, and utilities.
Below is the list of most common C Programming Interview Questions:
- Explain different steps in problem solving ?
- What is an algorithm ? Explain steps for making an algorithm.
- Explain the significance of algorithm.
- Explain flow chart along with various symbols used in flow charts.
- Write difference between algorithm and flowchart.
- Make an algorithm to find roots of quadratic equation ?
- Write advantages of an algorithm ?
- Write advantages of Flow-chart ?
- Explain features of C language ?
- Why C is known as structural programming language ?
- Write C character set ?
- Is C a case-sensitive language ? Explain.
- What is a variable ? Explain rules of creating variables ?
- Explain data types available in C language.
- Write difference between variable and constant ?
- What are keywords ?
- Define Identifiers ?
- What is escape sequence ? Explain with the help of examples ?
- Explain types of input output functions in C language ?
- What is nested printf () functions ?
- What is the difference between getch (), getche (), getchar ().
- What are format input output functions.
- Explain different format specifiers ?
- Why puts () and gets () are used and how ?
- Explain all the operators available in C language ?
- What are unary operators ?
- What are binary operators ?
- What are arithmetic operators ? Explain.
- Explain relational operators and logical operators.
- Explain operator precedence and their associativity ?
- Explain difference between pre-increment and post-increment ?
- Explain arithmetic,relational and logical expressions ?
- What are assignment operators ? Explain.
- What is type conversion ? Explain its type ?
- What are library functions ?
- Explain bitwise operators in detail along with examples ?
- Explain relational and logical operators with the help of example ?
- Explain conditional control statements with the help of examples.
- What is nested if statement ? Give examples ?
- What is switch-case-default statement ? Write syntax ?
- What are conditional operators ? Explain.
- Why conditional operators are also known as ternary operators.
- Explain difference between if and switch-case default statement.
- Explain iterative or looping control structures available in C-language ?
- Write difference between while loop and do-while loop ?
- What is for loop ?
- Explain nested loops ?
- What is do-while loop ?
- What are infinite loops ?
- Explain various jumping control statements along with examples ?
- Explain difference between break and continue ?
- What is goto statement ?
- Write all the palindrome numbers from 1 to 500.
- What is pointer ? How it is declared ? Explain.
- What is void datatype ?
- Explain call by reference ?
- Explain pointer to pointer.
- Explain with the help of example how function returns a pointer.
- Write uses of pointer.
- Explain all storage classes available in C language with the help of examples ?
- Write difference between automatic and static variables ?
- What are external variables ?
- What do you mean by storage class modifiers ? Explain ?
- How local variables are different from global variables ?
- What is the default storage class of a variable ?
- What are arrays ? How they are created ? Explain with the help of example ?
- What do you mean by array of pointers ?
- How arrays can be passed through functions.
- Write disadvantages of an array ?
- What is two dimensional array ? Explain with the help of examples ?
- What is a string ? How it is declared ?
- Why puts() and gets() is used in string ?
- Explain strcat () function.
- Explain different types of pre-defined functions used in string.
- What is array of strings ?
- What are user-defined datatypes ? Explain.
- What is a structure ? Write the syntax of structure with the help of examples ?
- What are the uses of structure ?
- Explain arrays of structure.
- Write difference between array and structure ?
- What is union ? Explain with the help of examples ?
- Write difference between array and union.
- Explain nested structures ?
- What is self-referential structure ?
- Explain enumeration with the help of example ?
- Explain type def.
- Explain arrays pointer.
- What do you mean by file handling in C ?
- Compare text file and binary file.
- Explain following functions
(i) fopen()
(ii) fclose()
(iii) fwrite()
(iv) fread() - What is liner search ? Explain with the help of examples.
- What are advantages and disadvantages of linear search ?
- What is Binary search ? Explain with the help of examples ?
- Explain difference between linear search and binary search ?
- What are the disadvantages of binary search ?
- Compare different methods of sortinf.
- What is bubble sorting ? Explain with the help of example ?
- What is insertion sort ? Explain.
- Explain with the help of example, quick sorting.
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