Small white for help after the C language to read in the structure of the contents of the documents,-CodePudding

C
Will read in the structure of the contents of the documents, to structure the body data processing, could you tell me where is wrong
#include
#include
# define N 32
Struct object
{
int id;
Char * name;
Int jump;
Int ru
Int breath;
Int weight;
} class1 [N].

Void the open ();
Int main (void) {
Int number;
Printf (" 1. Query qualified students \ n ");
Printf (" 0. Exit system \ n ");
Printf (" please enter the numeric instruction: \ n ");
The scanf (" % d ", & amp; Number);

while (! (number>=0 & amp; & Number<=8))
{
Printf (" do not have this option, please enter again: \ n ");
}

The switch (number)

{case 0:
{
Printf (" a management system has become a ");
return 0;
}
Case 1:
{

Int j;
The open ();
For (j=0; j<30; J++)
{
If (class1 [j] jump> 60 & amp; & Class1 [j] run> 60)
{
Printf (" % d % d % d % d % s \ n ", class1 [j]. Journal of id, class1 [j]. Name, class1 [j]. Jump, class1 [j]. Run, class1 [j]. Journal of breath).
}
}
Printf (" -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \ n ");

break;
}

Case 0: {
Printf (" a management system has become a ");
return 0;
break;
}

}
return 0;
}
Void the open () {
The FILE * fp.
Int I, j, nr=0;
Char buf [N], c;
Fp=fopen (" class. TXT ", "r");
If (fp==NULL) {
Printf (" file can't open the \ n ");

}
while (! The feof (fp)) {
C=fgetc (fp);
If (c=='\ n')
Nr++; }
Printf (" nr=% d \ n ", nr);
The rewind (fp);
Struct object *, line1=NULL;
, line1=(struct object *) malloc (sizeof (struct object) * (nr + 1));
For (I=1; i <=nr + 1; I++) {
The fgets (buf, N, fp);
Sscanf (buf, "% d % d % d % s \ n \ n", & amp; , line1 [I]. Id, & amp; , line1 [I]. Name, & amp; , line1 [I]. Jump, & amp; , line1 [I]. Run);
}
}

Option 1 read the file data structure is not only the result of the processing

CodePudding user response:

How do you want to deal with?

CodePudding user response:

How do you want to deal with?

CodePudding user response:

Don't see the statement

CodePudding user response:

Is in the case1

CodePudding user response:

For (j=0; j<30; J++)
{
If (class1 [j] jump> 60 & amp; & Class1 [j] run> 60)
{
Printf (" % d % d % d % d % s \ n ", class1 [j]. Journal of id, class1 [j]. Name, class1 [j]. Jump, class1 [j]. Run, class1 [j]. Journal of breath).
}

CodePudding user response:

 # include 
#include  
#include 

# define N 32 

Struct object 
{
int id; 
Char * name; 
Int jump; 
Int the run; 
Int breath; 
Int weight; 
} class1 [N]. 

Void the open (); 

Int main (void) 
{
Int number; 
Printf (" 1. Query qualified students \ n "); 
Printf (" 0. Exit system \ n "); 
Printf (" please enter the numeric instruction: \ n "); 
The scanf (" % d ", & amp; Number); 

while (! (number>=0 & amp; & Number<=8)) 
{
Printf (" do not have this option, please enter again: \ n "); 
} 

The switch (number) 
{
Case 0: 
{
Printf (" a management system has become a "); 
return 0; 
} 
Case 1: 
{

Int j; 
The open (); 
For (j=0; j<30; J++) 
{
If (class1 [j] jump> 60 & amp; & Class1 [j] run> 60) 
{
Printf (" % d % d % d % d % s \ n ", class1 [j]. Journal of id, class1 [j]. Name, class1 [j]. Jump, class1 [j]. Run, class1 [j]. Journal of breath). 
} 
} 
Printf (" -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- \ n "); 

break; 
} 
/* 
Case: 0 {//this is do what? A switch in the two case 0? 
Printf (" a management system has become a "); 
return 0; 
break; 
} 
*/

} 
return 0; 
} 
Void the open () 
{
The FILE * fp. 
Int I, j, nr=0; 
Char buf [N], c; 
Fp=fopen (" class. TXT ", "r"); 
If (fp==NULL) {//since the file cannot be opened, why not quit function? Will continue to perform? Don't make a mistake like that! 
Printf (" file can't open the \ n "); 
return;//out 

} 
while (! The feof (fp)) {
C=fgetc (fp); 
If (c=='\ n') 
Nr++; 
} 
Printf (" nr=% d \ n ", nr); 
The rewind (fp); 
Struct object *, line1=NULL; 
//, line1=(struct object *) malloc (sizeof (struct object) * (nr + 1)); 
, line1=(struct object *) malloc (sizeof (struct object) * (nr)); 
//for (I=1; i <=nr + 1; I++) {
for (i=0; i The fgets (buf, N, fp); 
//sscanf (buf, "% d % d % d % s \ n \ n", & amp; , line1 [I]. Id, & amp; , line1 [I]. Name, & amp; , line1 [I]. Jump, & amp; , line1 [I]. Run); 
Sscanf (buf, "% d % d % d % s \ n \ n", & amp; , line1 [I]. Id,, line1 [I]. Name, & amp; , line1 [I]. Jump, & amp; , line1 [I]. Run); 
} 
If (nr & gt; N) 
Nr=N; 
Memcpy (class1, line1, sizeof (struct object) * nr); 
Free (, line1); 
}

For your reference ~

First need to be processed to class1 assignment, you are to read the data into the, line1, then? The data will be automatically in class1?

CodePudding user response:

 the fgets (buf, N, fp);

It is also likely to read the whole line of content, suggest to define buf as 128 or 256, of course, according to a row the number of bytes to ~

CodePudding user response:

For (j=0; j<30; J++)
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