How to use "strtok" on the string?

[arf]

I face a big problem to use 'strtok' on the string. Message from the output is "error C2664: 'strtok' : cannot convert parameter 1 from 'std::string' to 'char *'". Can anybody give some suggessions about this matter?or may be for other approaches. My objective is to search "\n" in the string.

this is my code;

string x;
char delims[]="\n";
char *result=NULL;

               while(getline(infile, x ,'\n'))
	{
		result =strtok(x,delims);
		istringstream ss(x);
                               {
                                  ..........
                               }

[DeMan]

I'm not familiar with strtok (nor am I particularly familiar with Strings in c/c++) but I think..... a string is a char array. a char array can be accessed by a pointer to the FIRST char.
thus, it appears strtok wants a pointer to a string (as in a pointer to a pointer to a char), so you either need to declare x as
string *x
OR (if you want it to be modified) to pass in its' reference ie
doThis(&x) -> the & means something along the lines of "i give you a pointer to this variable so that I can use this variable later" ....so if you need to use the variable at x (and you aren't allocating the memory for it) you pass a 'reference to the value' x.

[Ganon11]

I face a big problem to use 'strtok' on the string. Message from the output is "error C2664: 'strtok' : cannot convert parameter 1 from 'std::string' to 'char *'". Can anybody give some suggessions about this matter?or may be for other approaches. My objective is to search "\n" in the string.

this is my code;

string x;
char delims[]="\n";
char *result=NULL;

               while(getline(infile, x ,'\n'))
	{
		result =strtok(x,delims);
		istringstream ss(x);
                               {
                                  ..........
                               }

Use x.c_str() to give strtok the char* representation of the string.

[arf]

Use x.c_str() to give strtok the char* representation of the string.

How to do that ? Can you show me?

[horace1]

How to do that ? Can you show me?

have a look at thread
http://www.thescripts. com/forum/thread607870.ht ml

[Ganon11]

arf:

In strtok, instead of using x, use x.c_str() and your program should work.