C Interview Questions & Answers

Below we have listed all the C Interview Questions and answers. Feel free to comment on any C Interview Questions or answer by the comment feature available on the page.

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C is a high-level and general purpose programming language that is ideal for developing firmware or portable applications. Originally intended for writing system software, C was developed at Bell Labs by Dennis Ritchie for the Unix Operating System (OS) in the early 1970s. With the increasing popularity of object-oriented programming, C is being rapidly replaced as "the" programming language by C++, a superset of the C language that uses an entirely different set of programming concepts, and by Java, a language similar to but simpler than C++, that was designed for use in distributed networks.

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	Question	Rating	View Answer
	I want source code of series of prime numbers.		View Answer
	Difference between const char* p and char const* p		View Answer
	If we want that any wildcard characters in the command line argument should be approxiemately expanded , are we required to make any special provision?if yes, which?		View Answer
	Write a program to accept any number up to six digit and print in words. for ex:1234=one two three four		View Answer
	main() { int i = 0xff ; printf("n%d", i<<2); }		View Answer
	If the following program (myprog) is run from the command line as myprog friday tuesday sunday, What would be the output? main(int argc, char *argv[]) { printf("%c",*++argv[1]); }		View Answer
	All the programs are tested under Turbo C/C++ compilers. It is assumed that, ?? Programs run under DOS environment, ?? The underlying machine is an x86 system, ?? Program is compiled using Turbo C/C++ compiler. The program output may depend on the information based on this assumptions (for example sizeof(int) == 2 may be assumed). Predict the output or error(s) for the following: i) void main() { int const * p=5; printf("%d",++(*p)); }		View Answer
	How can do search for data in a linked list ?		View Answer
	main() { int i, j; scanf("%d %d"+scanf("%d %d", &i, &j)); printf("%d %d", i, j); }		View Answer
	main() { printf("%d, %d", sizeof('c'), sizeof(100)); }		View Answer
	What would be the output of the following program? main() { const int x=5; int *ptrx; ptrx=&x; *ptrx=10; printf("%d",x); }		View Answer
	union u { struct st { int i : 4; int j : 4; int k : 4; int l; }st; int i; }u; main() { u.i = 100; printf("%d, %d, %d",u.i, u.st.i, u.st.l); }		View Answer
	What is hashing ?		View Answer
	What are bit fields? What is the use of bit fields in a structure declaration?		View Answer
	How to do a simple program simulation of a Rotation game? A player chooses to move a box encompassing four numbers, and then chooses to either rotate the numbers clockwise or counterclockwise.		View Answer
	How can you restore a redirected standard stream ?		View Answer
	const int perplexed = 2; #define perplexed 3 main() { #ifdef perplexed #undef perplexed #define perplexed 4 #endif printf("%d",perplexed); }		View Answer
	If the program (myprog) is run from the command line as myprog 1 2 3 , What would be the output? main(int argc, char *argv[]) { int i; for(i=0;i<argc;i++) printf("%s",argv[i]); }		View Answer
	What is the code to find our age,for example if my date of birth is 4/12/1986 and today date is 16/11/2008 answer should give our year,month,no of days		View Answer
	Can there be a mouse click and drag function used together to rotate a circle in c?please give which are they?		View Answer

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