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What is the purpose of dynamic memory allocation in C++?

Answer :
  • To allocate memory based on runtime requirements
Suggested Course : Embunit Testing

Explanation :

Dynamic memory allocation in C++ allows memory to be allocated and deallocated based on runtime needs, providing flexibility in memory usage.

What typical challenge must you address when integrating C++ code with Python using the Python/C API?

Answer :
  • Synchronizing different programming paradigms.
Suggested Course : Advanced Python Programming

Explanation :

C++ and Python have different programming paradigms and memory management models, requiring careful synchronization when integrating the two.

In C/C++, what is the result of the expression: (5 + 3) * 2 / 4 ?

Answer :
  • 4
Suggested Course : Embunit Testing

Explanation :

The expression follows the order of operations (parentheses first, then multiplication/division), resulting in (8 * 2) / 4 = 16 / 4 = 4.

How does typedef in Dart differ from typedef in languages like C/C++?

Answer :
  • Typedef in Dart is exclusively for function types

Explanation :

In Dart, typedef is exclusively used for defining function type aliases, whereas in C/C++, typedef can create aliases for various types.

Which data type in C/C++ is used to store decimal numbers with precision?

Answer :
  • float
Suggested Course : Embunit Testing

Explanation :

The float data type in C/C++ is used to store decimal numbers with single precision, typically occupying 4 bytes of memory.

Which data type in C/C++ is used to store single characters and occupies 1 byte of memory?

Answer :
  • char
Suggested Course : Embunit Testing

Explanation :

The char data type in C/C++ is used to store single characters, such as letters or symbols, and occupies 1 byte of memory.

What is the primary role of SWIG in extending Python functionality with C/C++ libraries?

Answer :
  • Creating wrapper code for C/C++ integration
Suggested Course : Advanced Python Programming

Explanation :

SWIG generates wrapper code to make C/C++ functions accessible from Python, facilitating language interoperability.

What is the output of the following code snippet in C/C++?int x = 5;int y = x++;printf( "%d ", y);

Answer :
  • 5
Suggested Course : Embunit Testing

Explanation :

The post-increment operator (x++) increments x after assigning its current value to y, so y will be 5.

In C/C++, what is the result of the expression: (5 + 3) * 2 / 4 % 3?

Answer :
  • 1
Suggested Course : Embunit Testing

Explanation :

The expression evaluates as ((5 + 3) * 2) / 4 % 3 = (8 * 2) / 4 % 3 = 16 / 4 % 3 = 4 % 3 = 1.