An lvarchar host variable of a fixed size

If you do not specify the size of an lvarchar host variable, the size is equivalent to a one-byte C-language char data type. If you specify a size, the lvarchar host variable is equivalent to a C-language char data type of that size. When you specify a fixed-size lvarchar host variable, any data beyond the specified size is truncated when the column is fetched. Use an indicator variable to check for truncation.

Because an lvarchar host variable of a fixed size is equivalent to a C-language char data type, you can use C-language character string operations to manipulate them.