string array size

[mrjoli021]

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.

[John A]

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

[mrjoli021]

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

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.

[John A]

How is FirstName declared?

Does it look something like this:

std::string FirstName;

Or is it like this:

char FirstName[] = "Blah blah";

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

[mrjoli021]

srting FirstName[10];

[Daniel E]

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:

#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]

[mrjoli021]

Microsoft Visual Studion .net 2003

[John A]

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:

const int ARRAY_SIZE = 10;
string FirstName[ARRAY_SIZE];

// ...

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

[WaltP]

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)

[mrjoli021]

an array to hold 10 strings

stringname.length() does not work

[iamthwee]

an array to hold 10 strings

stringname.length() does not work

Of course it doesn't, you want the actual size of the container.:rolleyes:

I.e if there is ten strings in there you want it to return 10. As mentioned before if you declare it as

string stuff[10]

Just do for (int i=0; i<10; i++) If you were using a vector of strings you could have done. for ( int i=0; i < myVector.size(); i++) Again mentioned before.

[WaltP]

Did you stop reading my post after the questions? I followed it with the answers... :rolleyes: