C Interview Questions
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1)what is the error in the following stmt where str is a char array and the stmt is supposed to traverse through the whole character string str? for(i=0;str[i];i++) a)There is no error. b)There shud be no ; after the stmt. c)The cond shud be str[i]!='\0' d)The cond shud be str[i]!=NULL e)i shud be initialized to 1

4 2233

main() { enum{red,green,blue=6,white}; pf("%d%d%d%d", red,green,blue,white); return 0; } a)0 1 6 2 b)0 1 6 7 c)Compilation error d)None of the above

6 4326

4)What would be the output? main() { int num=425; pf("%d",pf("%d",num)); } a)Comp error b)4425 c)4253 d)3435 e)none

10 4609




6)What would be the output? main() { int u=1,v=3; pf("%d%d",u,v); funct1(&u,&v); pf("%d%d\n",u,v); } void funct1(int *pu, int *pv) { *pu=0; *pv=0; return; } a)1 3 1 3 b)1 3 1 1 c)1 3 0 0 d)1 1 1 1 e) 3 1 3 1

4 3472

what wud be the output? main() { char *str[]={ "MANISH" "KUMAR" "CHOUDHARY" }; printf("\nstring1=%s",str[0]); printf("\nstring2=%s",str[1]); printf("\nstring3=%s",str[2]); a)string1=Manish string2=Kumar string3=Choudhary b)string1=Manish string2=Manish string3=Manish c)string1=Manish Kumar Choudhary string2=(null) string3=(null) d)Compiler error

Infosys,

9 4208

what will be the output of this program main() { int i=1; while (i<=10); { i++; } }

11 5187

main() { char x; while(x=0;x<=255;x++) printf("\nAscii value %d Charater %c",x,x); }

2 4029

main() { charx; while (x=0;x<=255;x++) printf("\nAscii value %d Character %c,x,x); }

2 4903




main() { intj; while9j<=10) { printf("\n%d",j); j=j+1; } }

4 2871

how to find the sizof of any datatype using bit manipulations

3 2281

How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?

Wipro, CMC,

2 4335

SIR PLS TELL ME THE CODE IN C LANGUAGE TO PRINT THE FOLLOWING SERIES 1 1 2 1 1 2 3 2 1 1 2 3 4 3 2 1 1 2 3 2 1 1 2 1 1

4 2898

what is the output of the program?? #include main ( ) { int a=010,sum=0,tracker: for(tracker=0;tracker<=a;tracker++) sum+=tracker; printf(“ %d\n”,sum); } what is the difference between a=10 and a=010??

Oracle,

3 7819

write a program for 4 4 3 3 3 3 2 2 2 2 2 2 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 4 4

1 1574

program to find out date after adding 31 days to a date in the month of febraury also consider the leap year

1715


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Un-Answered Questions { C }

why to assign a pointer to null sometimes??how can a pointer we declare get assigned with a garbage value by default???

653


Write a programme using structure that create a record of students. The user allow to add a record and delete a record and also show the records in ascending order.

816


What is the purpose of the following code? Is there any problem with the code? void send(int count, short *to, short *from) { /* count > 0 assumed */ register n = (count + 7) / 8; switch (count % 8) { case 0: do { *to = *from++; case 7: *to = *from++; case 6: *to = *from++; case 5: *to = *from++; case 4: *to = *from++; case 3: *to = *from++; case 2: *to = *from++; case 1: *to = *from++; } while (--n > 0); } }

937


Can you explain what keyboard debouncing is, and where and why we us it? please give some examples

915


process by which one bit patten in to another by bit wise operation is? (a) masking, (b) pruning, (c) biting, (d) chopping,

1007






disply the following menu 1.Disply 2.Copy 3.Append; as per the menu do the file operations 4.Exit

777


How to check whether string is a palindrome, WITHOUT USING STRING FUNCTIONS?

12674


Which is the memory area not included in C program? give the reason

748


write a program that reads lines(using getline), converts each line to an integer using atoi, and computes the average of all the numbers read. also compute the standard deviation.

1088


Sir,please help me out with the code of this question. Write an interactive C program that will encode or decode multiple lines of text. Store the encoded text within a data file, so that it can be retrieved and decoded at any time. The program should include the following features: (a) Enter text from the keyboard, encode the text and store the encoded text in a data file. (b) Retrieve the encoded text and display it in its encoded form. (c) Retrieve the encoded text, decode it and then display the decoded text. (d) End the computation. Test the program using several lines of text of your choice.

857


write a proram to reverse the string using switch case?

1397


Hello friends !!! I’am Abhinav Ranjan Sinha College- L.K.C.T(Indore) I just want to express my personnal experience of getting placed at Consagous Technologies,to all freshers who are in search of the job. On 25th of Feb 2011 there was a campus drive of Consagous Technologies in our college.That was the second time any software company is coming to our college for batch, I was very excited. Firstly, they started with a seminar, a small introduction about the company.Then as the first round of the placement process, they conducted GD, in every group there was 20 students, and in the GD they just given the topics on the current affairs ,like- Global warming, Science is a curse or boon, girls are superior than boys?, etc. Then after half an hour the result of GD was announced , and fortunetly I was selected among the 150 other students. Then there was a written round, that was fully Technical , the question paper consists of total 50 questions out which 45 are optional and the rest of the 5 questions are not optional. Some of them which I remember are- 1.when we pass an argument to a function , then how it is being interpreted? Ans- Address of the first element of an array. 2.how the size of structure can be determined? 3.Complexity of binary search algorithm? Ans-0(logn) 4.what does the symbol << do in c++? 5.what does (.) dot operator do? 6.what is RTTI? 7.What is containership? And many more questions related to data structure on complexity, C program output, etc Then the result was declared on the next day, total 45 students are short leasted out of 150(approx) and the further rounds of Technical and HR are after two days. Then on 28th of Feb 2011 we are called for the next rounds, and that was the toughest time ever as my turn came almost at last , firstly my name was announced for the Technical round, there when I entered there are 3 persons inside the room who are taking the interview, as I entered they asked me to reduce the speed of the fan, I went to the switch board but the regulator was not working , then they told me to switch it off. Then , they offerd me to have a seat, there they asked me about- 1. what is your area of interest? 2. what is recursion? 3. write a program of factorial using recursion. 4. differentiate between My sql and Sql server. 5. they asked me questions related to my minor project. 6. what does get and post method do? 7. what is structure? 8. what is union? Out of which I have given answers of the many of them. Then I was called for the PI (personnmal interview) , I was very tired as it was 6:30 and I was waiting for my turn from 11’o clock onwards. But as I was very much exited , I just prayed to God and entered in the room, As I entered I saw two persons there inside the room I wished both of them, and they offerd me the chair, I replied with thank you sir thank you mam. Then the first question which I was asked there is- 1.Tell me something about yourself? Then, 2.they asked me of my strengths. 3.then suddenly they started asking aptitude questions, and the main thing is that they are not repeating the questions, you have to listen it very carefully. And the questions are like— Que- a man moves 50 km away from his house in the north direction, then he turns left and moves 50 km , and then again he turns left and moves 50 km, then at which place he is from his house and at what distance? Que- the ratio of the age of the two friends are in the ratio 6:5 then there ratio becomes 8:7 , so how many years they will it takes to gain this ratio? 4.where do you see yourself after 5 years? 5.tell me your 5 such skills which you can give to our organization. 6.what do you know about our company? They both are very calm and are of very good nature, and they are very supportive which helped me a lott . And just after half an hour the results had been declared and fortunetly with God’s Grace I got selected, that was the one of the very most imported and cherishable moment of my life. All The Best to all my dear friends , and I wish you for your bright future. And , at last but not the least, I would like to thanks to Consagous Technologies to give me such a big opportunity to prove myself in my life, thank you so much.

1383


why return type of main is not necessary in linux

912


Write a C program linear.c that creates a sequence of processes with a given length. By sequence it is meant that each created process has exactly one child. Let's look at some example outputs for the program. Here the entire process sequence consists of process 18181: Sara@dell:~/OSSS$ ./linear 1 Creating process sequence of length 1. 18181 begins the sequence. An example for a sequence of length three: Sara@dell:~/OSSS$ ./linear 3 Creating process sequence of length 3. 18233 begins the sequence. 18234 is child of 18233 18235 is child of 18234 ........ this is coad .... BUt i could not compleate it .....:( #include #include #include #include int main(int argc, char *argv[]) { int N; pid_t pid; int cont; if (argc != 2) { printf("Wrong number of command-line parameters!\n"); return 1; } N = atoi(argv[1]); printf("Creating process sequence of length %d.\n",N); printf("%d begins the sequence.\n",getpid()); /* What I have to do next ?????? */ }

831


i have a written test for microland please give me test pattern

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