Concactinating Strings

My code has a semicolon ;). When I copied it in I must have accidentially removed it.

If there was no semicolon, the code itself would not compile.

I know that, just pointing it out

Code:

---

EXPRESSION(
        /* ID */                        0,
        /* Name */                        "Name(",
        /* Flags */                        EXPFLAG_STRING,
        /* Params */                (1,EXPPARAM_STRING,"Parameter")
) {
        char * str1 = (char *)"1st String";
        char * str2 = (char *)ExParam(TYPE_STRING);
        char * str3 = rdPtr->rRd->GetStringSpace(strlen(str1) + strlen(str2) + 1);
        strcpy(str3, str1);
        strcat(str3, str2);
        ReturnString(str3);
}

---

Raw strings in C are a pain...
But you could also use C++ CStrings like this:

Code:

---

EXPRESSION(
        /* ID */                        0,
        /* Name */                        "Name(",
        /* Flags */                        EXPFLAG_STRING,
        /* Params */                (1,EXPPARAM_STRING,"Parameter")
) {
        CString str1 = "1st String";
        CString str2 = (char *)ExParam(TYPE_STRING);
        CString str3 = str1 + str2;
        ReturnStringSafe(str3.c_str());
}

---

With Dynasoft's code my extension does not compile. It seems like CString has not been included. How can I include it?

Can you tell I haven't used them for a while :P
I got CString (a microsoft specific thing) and string (the C++ standard one) confused. Replace all the CString in my code with string, and add:

Code:

---

#include <string>

---

EDIT: So this:
EDIT: No + operator, only += apparently, so change like this:
EDIT3: Scratch that last edit

Code:

---

#include <string>

EXPRESSION(
        /* ID */                        0,
        /* Name */                        "Name(",
        /* Flags */                        EXPFLAG_STRING,
        /* Params */                (1,EXPPARAM_STRING,"Parameter")
) {
        string str1 = "1st String";
        string str2 = (char *)ExParam(TYPE_STRING);
        string str3 = str1 + str2;
        ReturnStringSafe(str3.c_str());
}

---

There is a + operator for std::string.

It wasn't listed in the online c++ help I looked at.
EDIT: Changed my post back.

Thanks everyone (Especially Dynasoft for his code)! It works now.