C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

What is ambagious result in C? explain with an example.

Infosys,

2568

Derive the complexity expression for AVL tree?

1 4133

what is difference between declaring the pointer as int and char in c language?

3 13357

wt is diference between int and int pointer as same as float and float pointer and char and char pointer

CTS, Infosys,

8 13238

write a c program to change only the 3rd bit of the particular number such that other bits are not affected.. if bitnum=10(say.. it can be any no..

Bosch, Mind Tree,

10 30873

What is key word in c language?

ABC,

4 10083

write the output of following code .. main() { static int a[]={10,20,30,40,50}; int *ptr=a; static int arr[2][2]={1,2,3,4}; char str[]="ABCD * 4#"; char *s=str+2; int i,j; for(i=0;i<5,i++) printf("%d",*ptr++); for(i=0;i<2;i++) for(j=0;j<2;j++) printf("%d\n",*(*(n+i)+j)); printf("%c\n%c\n%c\n",*(str+2),*s++,*--s); }

1 4191

what is c programing

Wipro,

11 15086

how to swap two nubers by using a function with pointers?

1 4128

Write a c program to Find the name that you entered is male name or female name? Such as Sunjay is name of male and Payal is name of female

Infosys, Luminous,

5 20387

swapping of two numbers without using third variable using AND and OR operators

2 7381

why integer range between -327680to+32767

2 9301

Write c-code for 5+55+555+5555+55555+555555+5555555. Output will be it's answer...

TCS,

4 25032

main() { int i=5; printf("%d%d%d%d",i++,i--,i); }

10 13039

main() { int i=0; while(+(+i--)!=0) i-=i++; printf(i); }

3 5026

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Un-Answered Questions { C }

What is output redirection?

1186

Write a program to produce the following output: 1 2 3 4 5 6 7 8 9 10

15755

State the difference between realloc and free.

1047

Find MAXIMUM of three distinct integers using a single C statement

1025

What is malloc calloc and realloc in c?

1246

You have given 2 array. You need to find whether they will create the same BST or not. For example: Array1:10 5 20 15 30 Array2:10 20 15 30 5 Result: True Array1:10 5 20 15 30 Array2:10 15 20 30 5 Result: False One Approach is Pretty Clear by creating BST O(nlogn) then checking two tree for identical O(N) overall O(nlogn) ..we need there exist O(N) Time & O(1) Space also without extra space .Algorithm ?? DevoCoder guest Posted 3 months ago # #define true 1 #define false 0 int check(int a1[],int a2[],int n1,int n2) { int i; //n1 size of array a1[] and n2 size of a2[] if(n1!=n2) return false; //n1 and n2 must be same for(i=0;ia1[i+1]) && (a2[i]>a2[i+1]) ) ) return false; } return true;//assumed that each array doesn't contain duplicate elements in themshelves }

3148

What is the use of a conditional inclusion statement in C?

1029

What is zero based addressing?

1127

Write a program of advanced Fibonacci series.

1113

Why do we use & in c?

965

Explain how are portions of a program disabled in demo versions?

1092

What is the difference between if else and switchstatement

1882

Explain what are the advantages and disadvantages of a heap?

1053

What functions are used in dynamic memory allocation in c?

1035

How can you find the day of the week given the date?

1161

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