Thread: why i get these errors..

1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(22) : error C2065: 'line' : undeclared identifier
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(22) : error C2440: '=' : cannot convert from 'int' to 'line'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(22) : error C2146: syntax error : missing ';' before identifier 'next_Id'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : '%'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 

 
struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};


struct line next_Id(FILE * room , int last_ID);
int main ()
{
FILE* c[2];
 struct line  temp;

c[0]=fopen("c:\\fl1.txt","r");//vote files ,each file represents the votes from a college
c[1]=fopen("c:\\fl2.txt","r");
temp=line next_Id(c[0] , 666666666);
fclose(c[0]);
fclose(c[1]);



	return 0;
}
 /*
 struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};
*/
struct line next_Id(FILE * room , int last_ID)
{
    struct line  temp;
	int flag;
		flag=fscanf(room,%10s%10s%10s%10d%,temp->name,temp->address,temp->ID,&temp->grade,&temp->code);

		return temp;
}

i solved some
but i get others instead??

error C2059: syntax error : '%'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2059: syntax error : 'bad suffix on number'

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 

 
struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};


struct line next_Id(FILE * room , int last_ID);
int main ()
{
FILE* c[2];
 struct line  temp;

c[0]=fopen("c:\\fl1.txt","r");//vote files ,each file represents the votes from a college
c[1]=fopen("c:\\fl2.txt","r");
temp=next_Id(c[0] , 666666666);
fclose(c[0]);
fclose(c[1]);



	return 0;
}
 /*
 struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};
*/
struct line next_Id(FILE * room , int last_ID)
{
    struct line  temp;
	int flag;
		flag=fscanf(room,%10s%10s%10s%10d%,temp->name,temp->address,temp->ID,&temp->grade,&temp->code);

		return temp;
}

There are many things wrong with your code.

Code:

temp=line next_Id(c[0] , 666666666);

should be

Code:

temp= next_Id(c[0] , 666666666);

Code:

flag=fscanf(room,%10s%10s%10s%10d%,temp->name,temp->address,temp->ID,&temp->grade,&temp->code);

should be

Code:

flag=fscanf(room,"%10s%10s%10s%10d%",temp.name,temp.address,temp.ID,&temp.grade,&temp.code);

The important thing is that you must understand why. Don't continue unless you do!

i fixed it more
but still i have this error in 5 places
why??

ex6.c(41) : error C2232: '->address' : left operand has 'struct' type, use '.'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2232: '->ID' : left operand has 'struct' type, use '.'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2232: '->grade' : left operand has 'struct' type, use '.'
1>c:\documents and settings\lun\my documents\visual studio 2005\projects\ex6\ex6\ex6.c(41) : error C2232: '->code' : left operand has 'struct' type, use '.'

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 

 
struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};


struct line next_Id(FILE * room , int last_ID);
int main ()
{
FILE* c[2];
 struct line  temp;

c[0]=fopen("c:\\fl1.txt","r");//vote files ,each file represents the votes from a college
c[1]=fopen("c:\\fl2.txt","r");
temp=next_Id(c[0] , 666666666);
fclose(c[0]);
fclose(c[1]);



	return 0;
}
 /*
 struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};
*/
struct line next_Id(FILE * room , int last_ID)
{
    struct line  temp;
	int flag;
		flag=fscanf(room,"%10s%10s%10s%10d%10d",temp->name,temp->address,temp->ID,&temp->grade,&temp->code);

		return temp;
}

there is no such thing as temp.name in C
only *temp.name which is the same thing as temp->name

so i cant see whats the problem
?

why its not letting me use "->" form
i cant understand this massage
'->grade' : left operand has 'struct' type, use '.'

in binary trees and stuff i used it all the time both on the left and the right sides
??

Code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 

 
struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};


struct line next_Id(FILE * room , int last_ID);
int main ()
{
FILE* c[2];
 struct line  temp;

c[0]=fopen("c:\\fl1.txt","r");//vote files ,each file represents the votes from a college
c[1]=fopen("c:\\fl2.txt","r");
temp=next_Id(c[0] , 666666666);
fclose(c[0]);
fclose(c[1]);



	return 0;
}
 /*
 struct line {
	char name[21], address[21], ID[10];
	int grade;
	int code;
};
*/
struct line next_Id(FILE * room , int last_ID)
{
    struct line  temp,max;
	int flag;
		flag=fscanf(room,"%10s%10s%10s%10d%10d%*c",&temp.name,&temp.address,&temp.ID,&temp.grade,&temp.code);
        while (flag!=5)
		{
           flag=fscanf(room,"%10s%10s%10s%10d%10d%*c",&max.name,&max.address,&max.ID,&max.grade,&max.code);
             if (max->grade)
		}
		return temp;
}

ahhhh thanks