Ad:

C++ Discussion Thread
Marked Solved
Views: 18282

Page 1
2
Next

You are currently viewing page 1 of this multi-page discussion thread

Apr 7th, 2007

string array size

Expand Post »

in c++ how do I get the size of a string array.
sterlen(arrayname) does not work or size(arrayname) either.

I am getting sterlen or size as idenitfier not found at compile time.

Similar Threads

How do I convert a vector to a String array ? in Java
works for static need help to make it dynamic in C++
ArrayList to multi-dimensional string array in C#
Geting elements from a String Array in C++

mrjoli021

Reputation Points: 7

Solved Threads: 0

Junior Poster

Offline

170 posts
since Mar 2007

Permalink

Apr 8th, 2007

Re: string array size

strlen should work since you say you're using "string arrays"

Last edited by John A; Apr 8th, 2007 at 12:06 am.

John A

Team Colleague

Reputation Points: 2240

Solved Threads: 338

Vampirical Lurker

Offline

5,055 posts
since Apr 2006

Permalink

Apr 8th, 2007

Re: string array size

ok here is what I got. I have
#include <string> and the for loop is

(Toggle Plain Text)

for (i = 0; i < FirstName.length(); i ++)
{
infile >> FirstName;
}

it still wont compile. now it says that left of length must have a class/strut/union type.

mrjoli021

Reputation Points: 7

Solved Threads: 0

Junior Poster

Offline

170 posts
since Mar 2007

Permalink

Apr 8th, 2007

Re: string array size

How is FirstName declared?

Does it look something like this:

C++ Syntax (Toggle Plain Text)

std::string FirstName;

Or is it like this:

C++ Syntax (Toggle Plain Text)
char FirstName[] = "Blah blah";
char FirstName[] = "Blah blah";

The latter will require what I edited into my post later (that is, strlen).

John A

Team Colleague

Reputation Points: 2240

Solved Threads: 338

Vampirical Lurker

Offline

5,055 posts
since Apr 2006

Permalink

Apr 8th, 2007

Re: string array size

srting FirstName[10];

mrjoli021

Reputation Points: 7

Solved Threads: 0

Junior Poster

Offline

170 posts
since Mar 2007

Permalink

Apr 8th, 2007

Re: string array size

What compiler are you using? I don't have the .length() function in MSVC++
To get what are you are trying do to do, the way I would do it would be:

C++ Syntax (Toggle Plain Text)
#include<vector>
#include<string>
 
//Then whatever goes in between
//Declaration
vector<string>FirstName(10);
//For your loop
for(i=0;i<FirstName.size();++i)
infile>>Firstname[i]
#include<vector>
#include<string>

//Then whatever goes in between
//Declaration
vector<string>FirstName(10);
//For your loop
for(i=0;i<FirstName.size();++i)
infile>>Firstname[i]

Daniel E

Reputation Points: 12

Solved Threads: 2

Newbie Poster

Offline

15 posts
since Apr 2007

Permalink

Apr 8th, 2007

Re: string array size

Microsoft Visual Studion .net 2003

mrjoli021

Reputation Points: 7

Solved Threads: 0

Junior Poster

Offline

170 posts
since Mar 2007

Permalink

Apr 8th, 2007

Re: string array size

Ah, I see what you're getting at.

Well, you could use the vector array example, or you could use a const to keep track of the array size:

C++ Syntax (Toggle Plain Text)
const int ARRAY_SIZE = 10;
string FirstName[ARRAY_SIZE];
 
// ...
 
    for (int i=0; i < ARRAY_SIZE; i++) {
        // ...
    }
const int ARRAY_SIZE = 10;
string FirstName[ARRAY_SIZE];

// ...

    for (int i=0; i < ARRAY_SIZE; i++) {
        // ...
    }

John A

Team Colleague

Reputation Points: 2240

Solved Threads: 338

Vampirical Lurker

Offline

5,055 posts
since Apr 2006

Permalink

Apr 8th, 2007

Re: string array size

Click to Expand / Collapse Quote originally posted by mrjoli021 ...

srting FirstName[10];

Do you mean to make
1) an array of 10 strings
2) a string to hold 10 characters?

If 1, you reference the length with stringname[index].length()

If 2, you create the string with char stringname[10] then reference the length with strlen(stringname)

WaltP

Moderator

Reputation Points: 3281

Solved Threads: 896

Posting Sage

Offline

7,749 posts
since May 2006

Permalink

Apr 8th, 2007

Re: string array size

an array to hold 10 strings

stringname.length() does not work

mrjoli021

Reputation Points: 7

Solved Threads: 0

Junior Poster

Offline

170 posts
since Mar 2007

Page 1
2
Next

This thread is solved

Either the thread starter or a moderator has marked this thread as solved. You can most likely trust the responses and answers given. There is most likely no reason for any further responses to be posted here. If you have a related question, please start a new thread in this forum instead.

This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.

Previous Thread in C++ Forum Timeline: Setting Cursor position

Next Thread in C++ Forum Timeline: compile error

DaniWeb Message

Cancel Changes

User Name
Password