How to use a string value as param in function using string pointer variable as input parameter

Question

This is the function I am coding now-

insertobjectnames(std::string clsname, std::string objname)

Now within the above function I have to invoke another function that takes as input the same parameters as above 2, but first one as string and second one as string pointer variable

The declaration for the second function is given below-

 int  analyse(const std::string key, std::string * key2)

How do I use the objname parameter from the first function to invoke the second function above? The second function (within itself) extracts the value of key2 from the parameters and then uses them as per requirements.

First, there's usually no good reason for analyse to expect a pointer for key2. It should take a reference (or a const reference, if it's not going to modify key2). Similarly, using const reference parameters instead of passing strings by value is preferable. — Roddy
– Roddy, Commented Oct 31, 2013 at 21:40

yizzlez · Accepted Answer · 2013-10-31 21:27:42Z

1

The & operator in C++: its the address-of operator: basically a variable to pointer converter! Ex:

int a = 0;
int *pointertoa = &a;
//So
std::string s;
std::string *ps = &s; //Extracting the "key" ps is a pointer to s
analyse(key, &objname); //should be the right way to pass the parameter as a pointer

edited Oct 31, 2013 at 21:27

answered Oct 31, 2013 at 1:12

yizzlez

8,7854 gold badges33 silver badges44 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

user2880330 Over a year ago

@awesomeyi- AFAIK SO asks for answers- hence please post the answer otherwise I cannot accept your hint as the answer.(And I have understood what you mean- thanks a lot :) )

Collectives™ on Stack Overflow

How to use a string value as param in function using string pointer variable as input parameter

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related