invalid conversion from 'const char*' to 'char*'

Question

Have a code as shown below. I have problem passing the arguments.

stringstream data;
char *addr=NULL;
strcpy(addr,ret         


        

Answer 1

Well, data.str().c_str() yields a char const* but your function Printfunc() wants to have char*s. Based on the name, it doesn't change the arguments but merely prints them and/or uses them to name a file, in which case you should probably fix your declaration to be

void Printfunc(int a, char const* loc, char const* stream)

The alternative might be to turn the char const* into a char* but fixing the declaration is preferable:

Printfunc(num, addr, const_cast(data.str().c_str()));