Qualcomm Embedded Software Engineer Interview Questions and Answers

Stack overflow occurs when a program uses more memory than the call stack can handle, leading to a crash.

• Occurs when a program's call stack runs out of memory

• Can lead to crashes or unexpected behavior

• Common in recursive functions with no base case

• Can be caused by infinite loops or excessive memory usage

Booting a system involves several steps including power-on, POST, bootloader loading, kernel initialization, and user space initialization.

• Power-on: System receives power and starts the boot process.

• POST (Power-On Self Test): Hardware components are checked for functionality.

• Bootloader loading: Bootloader is loaded into memory and executed.

• Kernel initialization: Operating system kernel is loaded and initialized.

• User sp...read more

Compilation involves multiple steps like preprocessing, compilation, assembly, and linking.

• Preprocessing: Includes header file inclusion, macro expansion, and conditional compilation.

• Compilation: Translates source code into assembly code specific to the target architecture.

• Assembly: Converts assembly code into machine code.

• Linking: Combines object files and libraries to generate an executable file.

Toggle the bits of given input

• Create a mask with all bits set to 1

• XOR the input with the mask to toggle the bits

• Repeat the process for each bit position

Print a star pattern using loops

• Use nested loops to print the desired pattern

• Increment the number of stars in each row to create the pattern

• Example: for a pattern with 5 rows - * , ** , *** , **** , *****