无法将 const char 转换为 char

Question

char messaggiou[100];    
char *name2;
string encoded;

        name2 = (char*)malloc(encoded.length() + 1); 
        strcpy(name2, messaggiou);                                     
        strcpy(encoded.c_str(), name2);           
        const char* hex_str = name2;

I get an error with this code (simplified), with vs2015 in C ++.

error C2664: `'char *strcpy(char *,const char *)': cannot convert argument 1 from 'const char *' to 'char *'

Ps In messaggiou there is an encrypted string in hex

Answer 1

if you use C++ I would do this in your place:

std::string messaggiou;    
std::string name2;
std::string encoded;

name2 = messaggiou;                                     
encoded = name2;          
const char* hex_str = name2.c_str();

Why complicate things if it can be easier, thanks to C++ :-)

You can also force any const with const_cast<char*>(const object) , but why if you don't need to...