Hitachi Digital Services Senior Embedded Engineer Interview Questions and Answers

Static and global are storage classes in C programming language.

• Static variables have a local scope but retain their value between function calls.

• Global variables have a file scope and can be accessed from any function within the file.

• Static functions have a file scope and can only be called within the file.

Mistakes in embedded software code

• Check for buffer overflows and memory leaks

• Ensure proper error handling and exception handling

• Verify correct usage of pointers and memory allocation

• Check for race conditions and synchronization issues

• Ensure compliance with coding standards and best practices

Explanation of protocols, call by value/reference, structures, unions, and arrays.

• Protocols are a set of rules for communication between devices or software components.

• Call by value passes a copy of the value to a function, while call by reference passes a reference to the value.

• Structures are user-defined data types that group related data together.

• Unions are similar to structures, but they share the same memory locat...read more