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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 Interview Questions & Answers

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.

Subcategories for C Interview Questions & Answers :-

Following are sub categories for which Interview Questions & Answers are available under C Interview Questions & Answers. Please select the appropriate sub-category:-

Arrays in C Interview Questions & Answers (18)

Branches & Loops in C Interview Questions & Answers (22)

C Basics Interview Questions & Answers (92)

Dynamic Memory Allocation in C Interview Questions & Answers (21)

File Operations in C Interview Questions & Answers (16)

Functions in C Interview Questions & Answers (59)

Operators in C Interview Questions & Answers (22)

Pointers in C Interview Questions & Answers (43)

Strings in C Interview Questions & Answers (32)

Structures in C Interview Questions & Answers (39)

Variables in C Interview Questions & Answers (38)

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When should a type cast be used?
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When should the register modifier be used? Does it really help?
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What is page thrashing?
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Write a program which accepts a filename as a command line argument and reverses the contents of the file( ie first character becomes the last character of the file and so on) Input: The program takes the file name whose content should be reversed. Output: The program reverses the contents of the file.
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I want C program code for : Reverse the links of a linked list by traversing only once Input: The input consists of the information in each node of the linked list. Output: The program displays the information in the linked list after the links are reversed. Sample Input: Enter the information in the linked list (Enter -1 to exit): 10 20 30 40 50 -1 Sample Output: After the links are reversed Information in the linked list: 50 40 30 20 10
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What does it mean- a[i]=i+i
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How can we open a image file through C program
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Output of this Programme please?? main() { int a[]={2,4,6,8,10}; int i; change(a,5); for(int i=0;i<=4;i++) printf(" %d", a[i]); } change(int *b,int n) { int i; for(i=0;i *(b+i) = *(b+i)+5; } sytaxis correct?? was asked i a test
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How do you write a C program which can calculate lines of code but not counting comments?
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main(int x)............. explaination on arguments passed thr' main
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union u1 { int i; char c; }u2; u2.i=32767; u2.c='a'; now the i value gets replaced. If we want to know the data that is saved in the union..internally, without knowing what values that we are using in the prog. that is if just want to know whether a union currently holds an int or a char? If it is a combination of both int and char..we must know even that. and the memory locations at which this data is stored?
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What will be the output of the following program in UNIX OS with CC compiler and TC compiler? int main() { int i=5; printf(" %d",++i + ++i + ++i + ++i + ++i ); } If any difference then Why it is difference?
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1.WRITE A 'C' PROGRAM TO READ THE AGE OF 100 PERSONS AND COUNT THE NUMBER OF PERSONS IN THE AGE GROUP 50 TO 60.USE FOR LOOP AND CONTINUE STATEMENTS.(10 MARKS) 2.WRITE A PROGRAM TO READ A POSITIVE INTEGER AND PRINT ITS BINARY EQUIVALENT.(10 MARKS) 3.GIVEN TWO ONE DIMENSIONAL ARRAYS A AND B WHICH ARE SORTED IN ASSCENDING ORDER.WRITE A PROGRAM TO MERGE THEM INTO A SINGLE SORTED ARRAY ,C THAT CONTAINS EVERY ITEM FROM ARRAYS A AND B,IN ASCENDING ORDER.(10 MARKS) 4.WRITE A FUNCTION IN C THAT WOULD TRAVERSE A LINEAR SINGLY LINKED LIST IN REVERSE AND WRITE OUT THE CONTENTS IN REVERSE ORDER.(10 MARKA) 5.WRITE A PROGRAM TO READ A SET OF INTEGERS AND TO SEPARATE ALL ODD AND EVEN NUMBERS .WRITE ALL EVEN NUMBERS IN ASCENDING ORDER.(10 MARKS) 6.WRITE A PROGRAM TO READ A REAL NUMBER X ANF FIND THE EVEN NUMBER NEAREST TO X.(10 MARKS) 7.WRITE A PROGRAM TO MULTIPLY TWO MATRICES OF ORDER M*N AND N*P RESPECTIVELY.(10 MARKS) 8.WRITE A PROGRAM IN'C' TO IMPLEMENT K-MAP SIMPLIFICATION TECHNIQUE.(10 MARKS)
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main() { int i; clrscr(); printf("%d", &i)+1; scanf("%d", i)-1; }
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main(int argc, char *argv[]) { (main && argc) ? main(argc-1, NULL) : return 0; }
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main() { int i; float *pf; pf = (float *)&i; *pf = 100.00; printf("n %d", i); }
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main() { int i = 0xff ; printf("n%d", i<<2); }
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#define SQR(x) x * x main() { printf("%d", 225/SQR(15)); }
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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); }
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main() { int i, j, *p; i = 25; j = 100; p = &i; // Address of i is assigned to pointer p printf("%f", i/(*p) ); // i is divided by pointer p }
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Latest 20 Questions
Contingent assets usually arise from unplanned or other unexpected events: a) True b) False c) Partly True d) None
Contingent asset is not recognized in the financial statements on the basis of _______ accounting concept: a) Prudence b) Materiality c) Substance over form d) Going concern
The Balance on the debit side of bank column in Cash Book indicates a) Total amount withdrawn from the bank b) Total deposited in the bank c) Cash at Bank d) Bank Overdraft
While balancing three column cash book, the discount columns are: a) Totaled but not adjusted b) Totaled and also adjusted c) Totaled but not balanced d) Balanced but not totaled
Postage stamps purchased for Rs. 30 by business. This transaction will be recorded in: a) Purchase Book b) Cash Book c) Petty Cash Book d) Journal
Where two aspects of a transaction are posted in the Cash Book, such an entry is called: a) Double Entry b) Debit Entry c) Credit Entry d) Contra Entry
Rent due for the month of March will appear ________ of the cash book. a) On the receipt side b) On the payment side c) As a Contra Entry d) Nowhere
In three column cash book, when does contra entry occurs? a) Withdrawal of cash from bank b) Payment to creditors c) Withdrawal of cash from bank for personal use d) All of the above
Double entry in Cash Book is completed when: a) Salaries are paid by cheque b) Withdrawal of money from bank for personal use c) Deposited cash into bank d) None of these
In petty cash book, the system followed: a) Accrual System b) Imprest System c) Cash System d) None of these
Cheques received but deposited on the next day are recorded in: a) Cash column of the cash book b) Bank column of the cash book c) Both of these d) none of these
What rate of commission is charged by the bank issuing the credit card: a) 1% to 3% b) 3% to 6% c) 2% to 5% d) 1% to 4%
If the debit and credit aspects of a transaction are recorded in the cash book it is a: a) Contra Entry b) Simple Entry c) Double Entry d) Single Entry
Small payments are recorded in a book called: a) Cash Book b) Small Payments Book c) Purchase Book d) Petty Cash Book
Cash book is a form of: a) Trial balance b) Ledger c) Journal d) All of the above
The balance of Petty Cash is: a) An Expense b) Revenue c) An Asset d) Liability
Briefly define top-down and bottom-up design model ?
What is the basis of Halstead?s complexity measure?
Differentiate validation and verification ?
What is structured design ?



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