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

C Code Interview Questions

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#include main() { char * str = "hello"; char * ptr = str; char least = 127; while (*ptr++) least = (*ptr 1 5880

Declare an array of N pointers to functions returning pointers to functions returning pointers to characters?

1 4127

main() { struct student { char name[30]; struct date dob; }stud; struct date { int day,month,year; }; scanf("%s%d%d%d", stud.rollno, &student.dob.day, &student.dob.month, &student.dob.year); }

1 5445

main() { struct date; struct student { char name[30]; struct date dob; }stud; struct date { int day,month,year; }; scanf("%s%d%d%d", stud.rollno, &student.dob.day, &student.dob.month, &student.dob.year); }

1 7686

There were 10 records stored in “somefile.dat” but the following program printed 11 names. What went wrong? void main() { struct student { char name[30], rollno[6]; }stud; FILE *fp = fopen(“somefile.dat”,”r”); while(!feof(fp)) { fread(&stud, sizeof(stud), 1 , fp); puts(stud.name); } }

1 4820

Is there any difference between the two declarations, 1. int foo(int *arr[]) and 2. int foo(int *arr[2])

1 5796

What is the subtle error in the following code segment? void fun(int n, int arr[]) { int *p=0; int i=0; while(i++ 1 5368

What is wrong with the following code? int *foo() { int *s = malloc(sizeof(int)100); assert(s != NULL); return s; }

1 4801

What is the hidden bug with the following statement? assert(val++ != 0);

1 6019

void main() { int *i = 0x400; // i points to the address 400 *i = 0; // set the value of memory location pointed by i; }

2 5778

#define assert(cond) if(!(cond)) \ (fprintf(stderr, "assertion failed: %s, file %s, line %d \n",#cond,\ __FILE__,__LINE__), abort()) void main() { int i = 10; if(i==0) assert(i < 100); else printf("This statement becomes else for if in assert macro"); }

1 8086

Is the following code legal? struct a { int x; struct a b; }

1 4689

Is the following code legal? struct a { int x; struct a *b; }

2 5197

Is the following code legal? typedef struct a { int x; aType *b; }aType

1 4548

Is the following code legal? typedef struct a aType; struct a { int x; aType *b; };

1 4941

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Un-Answered Questions { C Code }

Write a program to model an exploding firecracker in the xy plane using a particle system

4152

Cluster head selection in Wireless Sensor Network using C programming language.

3757

how to create a 3x3 two dimensional array that will give you the sums on the left and bottom columns

3656

To Write a C program to remove the repeated characters in the entered expression or in entered characters(i.e) removing duplicates. String contains only lowercase characters ['a'-'z']

998

How to palindrom string in c language?

11133

Develop a routine to reflect an object about an arbitrarily selected plane

3636

A program that will create a movie seat reservation. The program will display the summary seats and its status. The user will be ask what seat no. to be reserved, then it will go back again to the summary to display the updated seat status. If the seat no. is already reserved then it will prompt an error message. And also if the input seat no is out of range then it will also prompt an error message. The program is continuously running. Termination of the program will depends on how the programmer will apply. Sample output: Movie Seats Reservation Summary of Seats: Seat 1: Available Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 6 The Seat no. is out of range! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 1 The Seat no. is already reserved! Movie Seats Reservation Summary of Seats: Seat 1: Reserve Seat 2: Available Seat 3: Available Seat 4: Available Seat 5: Available Enter seat no. (Press 0 to terminate Or the assigned seat capacity) : 0 GoodBye... Thank You!!!

2342

Write a routine to implement the polymarker function

4917

could you please send the program code for multiplying sparse matrix in c????

3591

What is the match merge ? compare data step match merge with proc sql merge - how many types are there ? data step vs proc sql

2918

#include int main(void) { int a=4, b=2; a=b<>2 ; printf("%d",a); return 0; }

1652

How do you verify if the two sentences/phrases input is an anagram using predefined functions in string.h and by using arrays?

2559

Design an implement of the inputs functions for event mode

3534

write a c program to input initial & final time in the format hh:mm and find the time intervel between them? Ex inputs are initial 06:30 final 00:05 and 23:22 final 22.30

2708

write a program for area of circumference of shapes

2583

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