Convert C++ byte array to a C string

Question

I\'m trying to convert a byte array to a string in C but I can\'t quite figure it out.

I have an example of what works for me in C++ but I need to convert it to C.

Answer 1

Here is a demonstrative program that shows how it can be done.

#include 
#include 

typedef unsigned char BYTE;

int main(void) 
{
    BYTE byteArray[5] = { 0x48, 0x65, 0x6C, 0x6C, 0x6F };
    char s[sizeof( byteArray ) + sizeof( ( char )'\0' )] = { '\0' };

    memcpy( s, byteArray, sizeof( byteArray ) );

    puts( s );

    return 0;
}

The program output is

Hello

Pay attention to that the character array is zero initialized. Otherwise after the call of memcpy you have to append the terminating zero "manually".

s[sizeof( s ) - 1] = '\0';

or

s[sizeof( byteArray )] = '\0';

The last variant should be used when the size of the character array much greater than the size of byteArray.