need immediate help with struct !

[alfie27]

Hi,
I am getting 2 errors when i try to run my program. This is my first time using the struct feature so i'm not sure how to correct my errors. Any help will be greatly appreciated.
Here are the errors i am getting :
error C2440: 'initializing' : cannot convert from 'Transaction_st ructure [25][25]' to 'Transaction_st ructure *'
error C2664: 'transact' : cannot convert parameter 1 from 'Transaction_st ructure [25]' to 'Transaction_st ructure &'
A reference that is not to 'const' cannot be bound to a non-lvalue
#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <cstring>

struct Transaction_str ucture {
int amt;
char trans_desc[25];
};

const int ARRAYSIZE = 25 ;

int display_menu ();
double transact ( Transaction_str ucture & , char [] );
void transaction_his tory ( const double [],
const char [][ ARRAYSIZE ],
const double,
const int,
const Transaction_str ucture *
);

void main()
{

double trnx_amt [ ARRAYSIZE ] = { 0.0 }, // stores the amount of the transaction
cur_bal = 0.0;

int cur_trnx = 0, // use as index into arrays; skipping index 0)
menu_choice = 0;

char desc [ ARRAYSIZE ] [ ARRAYSIZE ] = { 0 } ; // 2-d array for transaction descriptions
Transaction_str ucture transaction [ARRAYSIZE][ARRAYSIZE] = {0},
*show = transaction;
for ( int i = 0; i < ARRAYSIZE; i++ )


cout << "Point of Sale Program\n"
<< "-----------------\n\n" ;

while ( cur_trnx < ARRAYSIZE && ( menu_choice = display_menu () ) )
{
switch ( menu_choice )
{
case 1:
for ( int i = 0; i < ARRAYSIZE; i++ )
if ( trnx_amt [ cur_trnx ] = transact (transaction[i], transaction [ cur_trnx ] ) )
{
cur_bal += trnx_amt [ cur_trnx ] ;
cur_trnx++ ;
}
break ;
case 2:
transaction_his tory ( trnx_amt, desc, cur_bal, cur_trnx, show );
break ;

default:
cout << "\nInvalid selection, please choose again.\n" ;
}

}

cout << "Closing Account...\n\n" ;

cout << "\n*** End of Program ***\n" << endl ;

}

int display_menu ()
{
int choice;

cout << "1. Enter a Transaction\n"
<< "2. Transaction History\n\n"
<< "0. Exit Program\n\n"
<< "Please enter your selection: ";
cin >> choice ;
return choice;
}

double transact ( Transaction_str ucture &tran, char trans_desc [] )
{
double amt;

cout << "\nPlease enter the amount of the transaction. Enter a positive number for\n"
<< "a sale and a negative number if a refund: " ;
cin >> tran.amt;

if ( amt )
{
cout << "\nPlease enter a one-word description of the item sold/returned: " ;
cin >> tran.trans_desc ;
cout << "Transactio n recorded.\n\n";
}
else
cout << "*** Zero entered. No transaction will be recorded.\n\n";

return amt;
}

void transaction_his tory ( const double trnx_amt[],
const char trans_desc [] [ ARRAYSIZE ],
const double cur_bal,
const int cur_trnx,
const Transaction_str ucture *tran
)
{
double payments = 0.0,
refunds = 0.0;

cout << "Transactio n History\n"
<< "-------------------\n\n" ;

for ( int i = 0; i < cur_trnx; i++ )
{
cout << i + 1 << ". " ;
if ( trnx_amt [ i ] > 0 )

{
cout << "Sale of " << trans_desc [i] << ": $" << trnx_amt [ i ] << "\n";
payments += trnx_amt [ i ];
}
else
{
cout << "Refund for " << trans_desc [i] << ": $" << -trnx_amt [ i ] << "\n";
refunds += -trnx_amt [ i ];
}


}
cout << "\n--------------------------------" ;
cout << "\nTotal sales : $" << payments ;
cout << "\nTotal refunds: ($" << refunds << ")" ;
cout << "\nNet : $" << cur_bal
<< "\n--------------------------------\n\n" ;
}