Univlabs Embedded Software Engineer Interview Questions, Process, and Tips

Macros in C are preprocessor directives that define constants or perform repetitive tasks.

• Macros are defined using #define directive.

• They are used to define constants like #define PI 3.14159.

• Macros can also be used to create code snippets that can be reused multiple times.

• For example, #define MAX(a, b) ((a) > (b) ? (a) : (b)) defines a macro to find maximum of two numbers.

Enum is used to define a set of named constants while struct is used to define a collection of variables of different data types.

• Enum is used to define a set of named constants, while struct is used to define a collection of variables of different data types.

• Enum values are typically integers, while struct members can be of any data type.

• Enums are used when you have a fixed set of values that won't change, while struct...read more

Deadlock is a situation in which two or more competing actions are each waiting for the other to finish, preventing any of them from completing.

• Occurs in multitasking environments

• Caused by resource contention

• Can be resolved using techniques like deadlock prevention, deadlock avoidance, and deadlock detection

• Example: Process A holds Resource X and waits for Resource Y, while Process B holds Resource Y and waits for Reso

Different function call methods include pass by value, pass by reference, and pass by pointer.

• Pass by value: Copies the value of the actual parameter into the formal parameter of the function.

• Pass by reference: Passes a reference to the memory location of the actual parameter.

• Pass by pointer: Passes the memory address of the actual parameter.

Moral motivation is driven by personal values and beliefs, while monetary motivation is driven by financial incentives.

• Moral motivation is based on doing what is right or ethical, regardless of financial gain.

• Monetary motivation involves being driven by financial rewards or incentives.

• Some individuals may prioritize moral motivation over monetary motivation, while others may prioritize financial gain.

• Examples: A person...read more