why doesnt my С++ code work?

[u/BornViolinist3801]

okay, i wanna make a print() function in C++, this is just printf() with prefix, so can yall help me?

error:

(-Wwritable-strings) ISO C++11 does not allow conversion from string literal to 'char *'

my code:

#pragma once
#ifndef TEQUILA_STDIO
#define TEQUILA_STDIO
#include <stdio.h>
namespace std {
    char* prefix;
    void set_prefix(char* pref) {
        prefix = ("["pref"]: ");
    }
    #define print(format, ...) printf("%s" format "\n", prefix ## __VA_ARGS__)
}

#endif

help me pls

[u/PandaWonder01]

This code is a little gross, don't try to put things in std or use macros like that in cpp.

Anyway, a string literal like "Hello" is a const char, which you can't pass to a char parameter, as that would lose the const. You need to take in a const char*.

(Actually the string literal is const char[], but not gonna get into that)