Answer to Question #185807 in C++ for Chathu

Question

Given reasons indicating why following identifiers are invalid,

1)goto

2)Struct

3)true

4)2k

Answer 1

Goto statement: Goto statement gives the power to jump to any part of the program but it makes the program complex and tangled. But in the modern programming language, the goto statement is quite harmful construct and a bad programming practice.

Struct: It beats both performance and memory. Each call is a copy, any array of structures is almost guaranteed to fall into the Large Object Heap, which will once again hit both performance (due to increased GC time) and memory (a fragmented heap is very bad). The struct members can not be initialized with declaration. C program fails in compilation but it is considered correct in cpp and above.

True : the value of true and false have been added as keywords in cpp. The default numeric value of true is 1 and false is 0. We can use boolean type variables or values true and false in mathematical expression also.