A person smarter than me once told me: “Just use snprintf()”.
The tiny performance hit is usually worth the safety and simplicity. Only one error condition to check, covering both concatenation and copies, sensible 'size' argument behaviour (size includes null terminating byte, null terminating byte is always written)...
The tiny performance hit is usually worth the safety and simplicity. Only one error condition to check, covering both concatenation and copies, sensible 'size' argument behaviour (size includes null terminating byte, null terminating byte is always written)...
Just use snprintf().