Continue:how can I solve these codevisionavr syntax errors?

#ifndef	_USART_H_
#define	_USART_H_ 	1



#include<io.h>
#include<delay.h>



/*The function is declared to initialize the USART with following cinfiguration:-
USART mode - Asynchronous
Baud rate - 9600
Data bits - 8
Stop bit - 1
Parity - No parity.*/

void usart_init();




/*The function is declared to transmit data.*/

void usart_data_transmit(unsigned char data );




/*The function is declared to receive data.*/

unsigned char usart_data_receive( void );




/*The function is declared to transmit string.*/

void usart_string_transmit(char *string);




/*The function is declared to receive string.*/

char *usart_string_receive(char *receive_string,unsigned char terminating_character);



/*Function defination*/

void usart_init()
{
UBRRH = 0;
UBRRL =51;
UCSRB|= (1<<RXEN)|(1<<TXEN);
UCSRC |= (1 << URSEL)|(3<<UCSZ0);
}


void usart_data_transmit(unsigned char data )
{
while ( !( UCSRA & (1<<UDRE)) )
;
UDR = data;
}

unsigned char usart_data_receive( void )
{
while ( !(UCSRA & (1<<RXC)) )
;
return UDR;
}

void usart_string_transmit(char *string)
{
while(*string)
{
usart_data_transmit(*string++);
}
}

char *usart_string_receive(char *receive_string,unsigned char terminating_character)
{
	unsignedchar temp=0x00;
	for(unsignedchar i=0;;i++)
	{
		*(receive_string+i)=usart_data_receive();
		if(*(receive_string+i)==terminating_character)
			break;
		else
		temp++;
	}
	*(receive_string+temp)='\0';
	return receive_string;
}
#endif