Syntax Element      In C and C++
prefix              EXEC SQL
terminator          ;
target              label

Variable Definition Syntax

C and C++ variable definition =
    [auto | extern | static] [const | volatile]
    C numeric variable | C character variable
  | C derived variable;

C and C++ numeric variable =
    {long | short | float | double}
    {variable name [initial value] }.,..

C and C++ character variable =
    char [CHARACTER SET [IS] character set name]
    {variable name {length} [initial value] }.,..

C and C++ derived variable =
    { VARCHAR [CHARACTER SET [IS] character set name]
    {variable name {length} [= character representation... ] }.,..} |
    { BIT{variable name {length} [= character representation... ] }.,..}

The length is the fixed length or the maximum varying
length of the string, and the character representation
sequence is an optional initial value.

SQL Type            C and C++ Type
BIGINT              long long
CHAR(1)             char
CHAR(n)             char(n+1)
CLOB(n)             clob(n)
DATE                char(11) with null-terminator
DOUBLE              double
INTEGER             long int
REAL                float
SMALLINT            short int
TIME                char(9) with null-terminator
TIMESTAMP           char(27) with null-terminator
VARCHAR(n)          char[n+1]
SQLCODE             long
SQLSTATE            char 6
indicator           short or long