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Programming Courses - Module Promotion - Viva Voce

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Which data structure has an O(1) time complexity for insertion at the end?

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What is the

output of the following code?

#include <stdio.h>

typedef int

INTEGER;

INTEGER x = 10;

printf("%d", x);

Garbage value

10

0

Compilation

error

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Which function is the best way to read a line from a file into a character array?

fscanf(fp, "%s", str);

fgets(str, size, fp);

fread(str, sizeof(str), 1, fp);

fgetc(fp);

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Which approach is best to find the number to print at any position (i, j) in the pattern ?

 4 4 4 4 4 4 4  
 4 3 3 3 3 3 4   
 4 3 2 2 2 3 4   
 4 3 2 1 2 3 4   
 4 3 2 2 2 3 4   
 4 3 3 3 3 3 4   
 4 4 4 4 4 4 4

Using direct indexing

Using conditions based on the minimum distance from the edges

Using recursion

Using an array

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What is the time complexity of an algorithm that checks each element in an array twice?

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What does the typedef keyword do in the given code?

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

struct triangle

typedef struct triangle triangle;

void sort_by_area(triangle* tr, int n) {

* Sort an array a of the length n

It allows using triangle instead of struct triangle

It allocates memory dynamically

It prevents the struct from being modified

It creates a new data type

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What is the primary use of self-referential structures?

To define macros in C

To perform arithmetic operations

To implement linked lists, trees, and graphs

To store only single values

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What does fclose() do in C?

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Which of the following is true about self-referential structures?

They can only be used with arrays

They must be dynamically allocated

They cannot store integer values

They must always have a pointer member

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What is the output of the following C program? int x = 0; while (x < 5) { x++; } printf("%d", x);

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