HCLTech Interview Questions, Process, and Tips

Storage classes in C define the scope and lifetime of variables.

• There are four storage classes in C: auto, register, static, and extern.

• Auto storage class is the default storage class for all local variables.

• Register storage class is used to define local variables that should be stored in a register for faster access.

• Static storage class is used to define local variables that retain their value between function calls.

• E...read more

Program to reverse an array of strings

• Iterate through each string in the array and reverse it using built-in functions or by swapping characters

• Use a temporary variable to store the reversed string before updating the original string

• Ensure to handle edge cases like empty strings or null values

malloc pointer is a function in C programming used to dynamically allocate memory.

• malloc pointer is used to allocate memory during runtime in C programming.

• It returns a pointer to the allocated memory.

• Example: int *ptr = (int*)malloc(10 * sizeof(int));

ACL protocol stands for Access Control List protocol, used to control access to network resources by defining rules for allowing or denying traffic.

• ACL protocol is commonly used in networking to restrict access to certain resources based on defined rules.

• ACLs can be configured on routers, switches, and firewalls to control traffic flow.

• ACLs can be configured based on source/destination IP addresses, ports, protocols, e...read more

Program to find 1st and 2nd lowest numbers in an array of strings

• Convert array of strings to array of integers

• Sort the array in ascending order

• Return the first and second elements of the sorted array

AGILE is a project management methodology that emphasizes on iterative development and customer collaboration.

• AGILE focuses on delivering working software frequently

• It values customer collaboration over contract negotiation

• AGILE teams are self-organizing and cross-functional

• It emphasizes on responding to change over following a plan

• AGILE principles are outlined in the Agile Manifesto

Verification ensures that the product is built according to the requirements, while validation ensures that the product meets the customer's needs.

• Verification checks if the product is built correctly, while validation checks if the right product is built.

• Verification is a process of evaluating the intermediate work products, while validation is a process of evaluating the final product.

• Verification is done by develope...read more