C Interview Questions
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#define MAX 3 main() { printf("MAX = %d \n",MAX ); #undef MAX #ifdef MAX printf("Vector Institute”); #endif

Vector, IBM,

4 12118

main() { int l=6; switch(l) { default:l=l+2; case 4:l=4; case 5:l++; break; } printf("%d",l); }

1 1516

1 1 12 21 123 321 12344231 how i creat it with for loop??

1 2067

12344321 123 321 12 21 1 1 how i print this program??

DSR Management, Winit,

5 6037

how to swap 4 number without using temporary number?

2 2524

write a c program thal will find all sequences of length N that produce the sum is Zero, print all possible solutions?



a c code by using memory allocation for add ,multiply of sprase matrixes


#define MAX 3 main() { printf("MAX = %d ",MAX ); #undef MAX #ifdef MAX printf("Vector Institute”); #endif }

Vector India,


main() { int a[3][4] ={1,2,3,4,5,6,7,8,9,10,11,12} ; int i, j , k=99 ; for(i=0;i<3;i++) for(j=0;j<4;j++) if(a[i][j] < k) k = a[i][j]; printf("%d", k); }

Wipro, Zoho, Vector,

4 9030

main() { enum _tag{ left=10, right, front=100, back}; printf("%d, %d, %d, %d", left, right, front, back); }

1 2459

 Illustrate it   summing the series 2+4+6+......to n terms using  (i) while loop (ii) do-while loop

2 3068

write an interactive C program that will encode or decode a line of text.To encode a line of text,proceed as follows. 1.convert each character,including blank spaces,to its ASCII equivalent. 2.Generate a positive random integer.add this integer to the ASCII equivalent of each character.The same random integer will be used for the entire line of text. 3.Suppose that N1 represents the lowest permissible value in the ASCII code,and N2 represents the highest permissible value.If the number obtained in step 2 above(i.e.,the original ASCII equivalent plus the random integer)exceeds N2,then subtract the largest possible multiple of N2 from this number,and add the remainder to N1.Hence the encoded number will always fall between N1 and N2,and will therefore always represent some ASCII character. 4.Dislay the characters that correspond to the encoded ASCII values.  The procedure is reversed when decoding a line of text.Be certain,however,that the same random number is used in decodingas was used in encoding.


 write a program that will open the file, count the number of occurences of each word in the the complete works of shakespeare.  You will then tabulate this information in another file.


main() { int age; float ht; printf("Enter height and age"); scanf("%d%d",&height,&age); if((age<=20)&&(ht>=5)) {printf("She loves you");} else {printf("She loves you");} }

2 2180

Hai,I have done with my bachelor of commerce and planing to ms,please suggest me how to convince vo for shifting from commerce to computers. Visa on 8 DEC 2014  Npu university


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Un-Answered Questions { C }

illustrate the use of address operator and dereferencing operator with the help of a program guys plzzz help for this question


how can use subset in c program and give more example


in linking some of os executables are linking name some of them


Is Exception handling possible in c language?


I need help with the following lab. Can anyone explain it to me on how to approach this problem. Coding would be great too !!! No busy waiting allowed. Remember that Java monitors are 'signal and continue'. The input data is called the database (DB). In this problem, it consists of a single variable initialized in the main thread, to contain the current time of day in HH:MM:SS:mmm format (mmm is milliseconds) truncated to 3 digits. Threads follow these rules: 1. Readers may all attempt to read at the same time, but NOT if a writer is writing (i.e.; the writer is in the monitor. 2. Writing is exclusive (only 1 writer at a time, no readers while writing). 3. Options: (to be specified by instructor) a. Readers have absolute priority over writers. b. Writers have absolute priority over readers c. When a reader arrives and a writer is waiting, the reader is suspended behind the writer instead of being admitted immediately. Thus, a writer waits for readers that were running when it arrived, but does not to wait for new readers. You may program this in C++ or Java. There are 4 controlling input values: 1. r – number of readers 2. w – number of writers 3. R – delay for a reader to restart 4. W – delay for a writer to restart Create the following program consisting of 1 main process (your main program) with n threads: 1. The main thread: a. Creates the 'n' threads needed. Of these, r of them are readers and w of them are writers. Starts all readers and writers. b. Waits for all 'n' threads to complete. You may use any method to detect when they are all complete. c. Prints out the resulting outputs from the threads. 2. Threads: a. When a thread starts to run, it immediately tries to enter the monitor. b. A reader thread reads the DB, outputs the exact message below, then exits: >>> DB value read =: HH:MM:SS:mmm by reader number: rr where the underlined text is replaced with actual data. c. A writer thread updates the DB with a new value (from the system time), outputs the exact message below, then exits: *** DB value set to: HH:MM:SS:mmm by writer number: ww where the underlined text is replaced with actual data. d. Each thread accesses the data a total of 10 times, exiting, then re-entering the monitor after each access. Hints: 1. File access *might* not be thread-safe, so you should be prepared to handle this. Read the documentation for the language you are using. 2. Suggested values for delays are: a. If looping, R >=1,000,000 and W>=100,000 b. If using “sleep”, then R=100 ms, W=50 ms. Additional: • Thread output is to ONE file used by ALL threads (so you need to synchronize access to it). • Readers must provide sufficient delay that results are useful (delay by R before re-trying). R is another input value. • Writers must also delay. Delay by W, updating the DB each time. W is an input. • Test your program with AT LEAST TWO different sets of values for r and w (#s of readers and writers) plus this set: r = 4, w=2. Basic operation of a thread: attempt to enter the monitor. If unsuccessful, you get put on a queue. When you get in, read or write the data (depending on type of thread), exit the monitor, wait the required delay amount, then try again. Repeat 10 times.


write a program to convert a expression in polish notation(postfix) to inline(normal) something like make 723+* (2+3) x 7 (not sure) just check out its mainly printing expression in postfix form to infix.


How do we make a global variable accessible across files? Explain the extern keyword?


what is associativity explain what is the precidence for * and & , * and ++ how the folloing declaration work 1) *&p; 2) *p++;




what is the different bitween abap and abap-hr?


what is uses of .net


write a program to find out prime number using sieve case?


hw can we delete an internal node of binary search tree the internal node has child node..plz write progarm


To print the pattern 1 2 3 4 5 10 17 18 19 6 15 24 25 20 7 14 23 22 21 8 13 12 11 10 9


c language interview questions & answer