Should I use std::string?

When dealing exclusively in C++ std:string is the best way to go because of better searching, replacement, and manipulation functions. Some of the useful std:string functions are discussed below.

Should I pass std::string by reference?

OTOH, for C++98 it is best to pass by reference – less data gets copied around. Passing const or non const depend of whether you need to change the argument or not.

What is const char * const *?

const char* const says that the pointer can point to a constant char and value of int pointed by this pointer cannot be changed. And we cannot change the value of pointer as well it is now constant and it cannot point to another constant char.

Should I use char or string?

There is no reason to use char* when you need a string — unless your primitive strings are fixed on the stack or compiled in and the profiler said that’s how they should be. Advising to use a char* over a string is roughly never a good advice if the profiler didn’t say the same thing.

Why should I use char instead of string?

If you’re writing performance-critical code, or you actually have to worry about memory fragmentation, then using char* can save you a lot of headaches. For anything else though, the fact that std::string hides all of this from you makes it so much more usable. String may actually be better in terms of performance.

Is string passed by reference in Java?

Nothing in java is passed by reference, and since a string is immutable, that assignment creates a new string object that the copy of the reference now points to.

How do you pass a string to a function?

In C, if you need to amend a string in a called function, pass a pointer to the first char in the string as an argument to the function. If you have allocated storage for the string outside the function, which you cannot exceed within the function, it’s probably a good idea to pass in the size.

Is char * a String?

char* is a pointer to a character. char is a character. A string is not a character. A string is a sequence of characters.