WIPO Interview Questions and Answers

a++ is faster than a=a+1 because it is a single operation compared to two operations in a=a+1.

• a++ is a single operation that increments the value of a directly

• a=a+1 involves two operations - addition and assignment

• Example: int a = 5; int b = a++; // b will be 5, a will be 6

• Example: int a = 5; int b = a=a+1; // b will be 6, a will be 6

Pull-up resistors in I2C are used to ensure proper communication by providing a defined voltage level when the bus is in an idle state.

• Pull-up resistors are used to pull the signal high when no device is actively driving it low.

• They prevent floating bus conditions and help in maintaining signal integrity.

• Pull-up resistors are typically connected to the SDA and SCL lines in an I2C bus.

• Common values for pull-up resistors...read more

Use bitwise operations to swap the bytes of the integer without using a second variable.

• Use bitwise AND and bitwise OR operations to swap the bytes of the integer.

• Shift the bytes to the correct positions using bitwise operations.

• Example: a = 0xabcd; a = ((a & 0x00FF) << 8) | ((a & 0xFF00) >> 8);

Compilation steps for C code involve preprocessing, compiling, assembling, and linking.

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

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

• Assembling: Converts assembly code to machine code in object files.

• Linking: Combines object files with libraries to create an executable file.

Code bloating refers to the unnecessary increase in the size of software code due to redundant or inefficient programming practices.

• Code bloating can occur when developers use inefficient algorithms or write redundant code.

• It can also happen when unnecessary features or libraries are included in the codebase.

• Code bloating can lead to slower performance, increased memory usage, and longer development times.

• Examples of c...read more