Mix of types into a char pointer

[bilyed]

Hello Everybody,

This is my first post and I would like to ask you a question about a mix of types into a char pointer.

I have defined a char pointer that will be filled with information from different types (int, float and char mainly) through sprintf. When I compile i get this message "warning: deprecated conversion from string constant to ‘char*’" and when I run I get segmentation fault.

I could use string types but the problem is that I have to convert one to type to an specific type and finally I have to convert this string into a char because mysql function don't accept string.

I have been seeking information but I didn't find a similar case.

Any hints??...thank you

Billy

[hanst99]

What code is causing this? I assume you have something like:

char *a;
a = "hello";
sprintf(a, "%d", 5);

? That would explain the error, and indicate you should just stay away from char* and use strings until you actually understand how pointers and string constants etc work.

[bilyed]

I have something like this:

char *str;
int str2=23;
float s=12.5;
char *f="hello";
sprintf(str,"%d %f %s ",str2,s,f);

[hanst99]

const char *f="hello"; //string literals are constant 

char *str; //str is uninitialized 

Discard this C stuff and do it the C++ way. You won't screw up that badly with that.

[bilyed]

OK....I have many parts in my program that is concatenating information in this way and the solution (not god solution of course) that I have decided to use is to give a dimension to str and works good and there is no warning messages.

Thank you hanst99