Pro *C giving an compilation error while compiling

Hi Team,

I am new to pro *c program , I have created a c program called insert_data.pc, which does the following . Iam trying to insert into table b in schemaA by invoking a procedure from packageA. \
Iam getting an compile time error


I am compiling using the below command . Database is oracle

proc CODE=cpp CPP_SUFFIX=cpp PARSE=NONE sample.pc

void insert_data(char p_name[] , int p_amount)
{
EXEC SQL AT DBCONNECTIONNAME EXECUTE
                    BEGIN
                         schemaA.packagA.insert_emp_sal(:p_name,:p_amount);
                   END;
END-EXEC;

}

Iam getting the below error when I compile the program as below
PCC-S-02322 , found undefined identifier
                         schemaA.packagA.insert_emp_sal(:p_name,:p_amount);
   
}

Any help is really appreciated.