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19AI305 - Advanced C Programming

19AI305 - Advanced C Programming

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Why is gets() unsafe and should be avoided?

It can cause a buffer overflow

It only works for integers

It does not read spaces

It replaces spaces with underscores

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Which input method allows you to specify the maximum number of characters to read?

scanf("%s", str);

fgets(str, 50, stdin);

gets(str);

printf("%s", str);

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What will printf("%s", str); do if str contains spaces?

It will only print up to the first space

It will print the full string, including spaces

100%

It will replace spaces with \0

It will cause an error

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What happens when the head of a singly linked list is lost?

The last node becomes the new head

The entire list is lost

A new head is automatically assigned

The list remains intact

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What is a singly linked list?

A list where nodes have pointers to both previous and next nodes

A list that allows bidirectional traversal

A list with a fixed number of elements

A list where each node contains data and a pointer to the next node

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What does the last node of a singly linked list point to?

Itself

Next node

First node

NULL

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What is the minimum number of pointers needed to implement a singly linked list?

100%

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Which operation is more efficient in a singly linked list compared to an array?

Insertion and deletion at the beginning

Accessing the last element

Searching for an element

Random access of elements

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How do we check if a queue is empty in an array-based queue implementation?

If rear == -1

If front == -1 or front > rear

If rear == size - 1

If front == rear

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What is the time complexity of enqueue and dequeue operations in an array-based queue?

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