将uint32转换为const char * C ++

Question

I have a function that takes in const char* as argument, but the data I have is Datum(PostgreSQL) , which I am converting to Uint32 using DatumGetUint32() function . I now need to convert it to const char* in C++ . I have looked up online, many different websites but get no conclusive answer. Any help will be appreciated! Thanks in advance.

Edit: This is because I have different functions that I have to pass the data to. Currently, the data is of form Uint32. The function however takes 'const char*' as the parameter. So my guess is to convert Uint32 to char and then pass it to the function using a pointer. But I am unsure how to proceed further. Hope this helps you to understand better!

Answer 1

Take a look at boost lexical_cast . I think it will help you.

Answer 2

If what you want to do is

145 -> "145"

Then sprintf is a pretty standard way of doing the int to char* transition. Then you just have to cast the newly made char* as a const char* when you call your function.

Example:

char myString[10] = ""; // 4294967296 is the maximum for Uint32, so 10 characters it is
sprintf(myString, "%d", (long)myUint32); // where 'myUint32' is your Uint32 variable
my_function((const char*)myString); // where 'my_function' is your function requiring a const char*