Interview and Viva Questions

Interview and Viva Preparation Questions on "C"  Programming Language -Problem Solving Using "C"

This is a list of latest C Interview Questions that are appearing in most of the current interviews as a fresher and experienced candidate. You will also get top C Programming Interview Questions.

1	What do you mean by the size of integer, character, float and double data types in C programming?
2	What are the attributes of structure in C programming language?
3	What are the attributes of union in C programming language?
4	What do you mean by self-referential structure in C programming language?
5	What are benefits and drawback of using macro in C programming language?
6	What do you mean by the difference between auto and register keywords in C programming ?
7	What do you mean by the use of bit field in C programming language?
8	What do you mean by bit error in C programming language?
9	How many numbers of arguments that can be passed to a function in C programming language?
10	What do you mean by header file in C programming language?
11	Why do you mean by semicolon used at the end of each line in C programming language?
12	What do you mean by the getc(), getch() and getchar() in C programming language?
13	How to change the size of an array dynamically in C programming language? Explain it.
14	What do you mean by array in C programming language? How initialize it.
15	What do you mean by recursion function in C programming language?
16	What do you mean by static array and dynamic array in C programming language?
17	What do you mean by pointer to pointer in C programming language?
18	What do you mean by file streaming in C programming language?
19	How will swap two variables without using third variable in C programming language?
20	What do you mean by #include <stdio.h> and #include <conio.h> in C programming language?
21	What do you mean by operator precedence in C programming language?
22	Do you know, Is it possible to return more than one values from a function in C programming ?
23	What do you mean by function prototype in function C programming language?
24	What do you mean by the fflush() function in C programming language?
25	What do you mean by the extern keyword in C programming language?
26	Do you know, Can modulus operator be applied to float or double data type in C programming ?
27	What do you mean by the normal variable and pointer variable in C programming language?
28	What do you mean by the types of pointers in C programming language?
29	What do you mean by format specifies in C programming language?  Why are they used?
30	What value will be assigned to X below if q = 15?-           X = *q++; X = ++ *q;
31	What do you mean by printf() and sprintf() functions in C programming language?
32	What do you mean by the character array and string in C programming language?
33	What do you mean by the char const* p and const char* p in C programming language?
34	What does implicit and explicit function in C programming language?
35	What do you mean by enum and #define constant in C programming language?
36	What are predefined macros in C language programming language?
37	Which code executed faster than other? Why?    a++;  a+1;
38	What is error handling functions in C programming language?
39	How to check array boundary in C programming language?
40	What do you mean by null pointer in C programming language?
41	Do you know, Can you assign null to a pointer after freeing memory in C programming language?
42	What do you mean by page thrashing in C programming language?
43	What do you mean by sorting technique and give the list of all sorting technique in C programming language?
44	What do you mean by searching technique and give the list of all searching technique in C programming language?
45	What do you mean by the quickest sorting technique in C programming language?
46	What do you mean by the quickest searching technique programming language?
47	What do you mean by user defined function and pre-built function in C programming language?
48	What do you mean by linker and linkage programming language?
49	What do you mean by the actual argument and formal argument in C programming language?
50	What do you mean by internal and external static variables in C programming language?
51	What do you mean by modular programming approach in programming language?
52	What do you mean by indirection method in C programming language?
53	How to differentiate array and pointer in C programming language?
54	How pointer variable is initialized in C programming language?
55	What do you mean by text mode and binary modes in file in C programming language?
56	How to differentiate structure and union in C programming language?
57	What do you mean by structure and array in C programming language?
58	What do you mean by extern, static and auto variable in C programming language?
59	What do you mean by register variable stored in memory programming language?
60	What do you mean by for loop and while loop in C programming language?
61	What do you mean by array of pointer in C programming language?
62	Do you know, C program have more than one main () function in a program?
63	What do you mean by file handling in C programming language?
64	What are the types of files handling in C programming language?
65	What do you mean by file pointer in C programming language?
66	What is the main difference of array of pointer and pointer to array in C programming language?
67	What do you mean by fopen(), fclose() and fstream in C programming language?
68	What do you mean by ftell function in C programming language?
69	What do you mean by constant pointer and pointer to a constant in C programming language?
70	How to differentiate between syntax error and logical error in C programming language?
71	What do you mean by the difference between single and multiple statements in C programming language?
72	Do you know, Is macro better than function in C programming language?
73	How to define goto statements in C programming language?
74	What do you mean by break and continue statement in C programming language?
75	Give the name of header file require to be included in C program to use printf() and scanf() functions?
76	What do you mean by the difference between gets(), puts() and  fgets() in C programming language?
77	What do you mean by data type constant and modifier in C programming language?
78	What do you mean by the storage size of long integer in 64 bit processor in C programming language?
79	What do you mean by the storage size of double in 32 bit processor in C programming language?
80	Write the syntax for enumerator data type in C programming language?
81	How many derived data types in C programming language?
82	What do mean by tokens in C programming language?
83	What do you mean by keyword in C programming language?
84	What do you mean by identifier and constant in C programming language?
85	What do you mean by volatile keyword in C programming language?
86	What do you mean by auto specifier in C programming language?
87	What do you mean by static specifier in C programming language?
88	What do you mean by extern specifier in C programming language?
89	What do you mean by register specifier in C programming language?
90	How to stored data in 2 D arrays in C programming language?
91	What do you mean by string handling in C programming language?
92	What do you mean by the strcat() and strncat() functions in C programming language?
93	Which string function is used to compare two strings in C programming language?
94	What do you mean by the size of integer pointer and char pointer in C programming language?
95	What do you mean by function in C programming language?
96	Why we are need a functions in C programming language?
97	What do you mean by function declaration, function call and function definition in C programming language?
98	What do you mean by call by value in C programming language?
99	What do you mean by call by reference in C programming language?
100	Do you know, when a function can return value to the calling function in C programming language?
101	What do you mean by inbuilt function in C programming?
102	What are the benefits library functions over user defined functions in C programming language?
103	Do you know, Is exit () function declared in which header file in C programming language?
104	What do you mean by command line argument in C programming language?
105	What do you mean by variable length argument in C programming language?
106	How many times call a function in a C program?
107	What is the functions type in C programming language?
108	What is the output for the following code?->       C = floor(5.7);         C = ceil(5.7);
109	Do you know, which header file contain the abs () function in C programming language?
110	What do you mean by buffer manipulation function in C programming language?
111	Do you know which function is used to modify system date and time in C programming language?
112	What do you mean by dynamic memory allocation in C programming language?
113	What do you mean by malloc () function in C programming language?
114	What do you mean by calloc () function in C programming language?
115	What do you mean by realloc () function in C programming language?
116	What is the se of free () function in C programming language?
117	What do you mean by type casting in C programming language?
118	Do you know how will you convert string into integer or float in C programming language?
119	How to differentiate between variable, array and structure in C programming language?
120	What do you mean by sparse matrix in array in C programming language?

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