C standard I/O build a file repository

Realized the deletion and modification

A struct was created to save Num name cout price

Code

#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/mman.h>

typedef struct
{
int num;
Char name[32];
int count;
int price;
}good;

int main (int argc,char *argv[])
{
FILE *FP;
Good good;
Fp=fopen (Argv[1], "A +");
if (NULL==FP)
{
Perror ("Fopen1");
return-1;
}
Fclose (FP);
Fp=fopen (Argv[1], "r+");
if (NULL==FP)
{
Perror ("Fopen2");
return-1;
}
int n;
printf ("Please input your select function\n\n");
printf ("----1-------------store good\n");
printf ("----2------------browse good\n");
printf ("----3--------------seek good\n");
printf ("----4-------------alter good\n");
printf ("----5------------Delete good\n");
printf ("----6--------------rank good\n");
printf ("----7------------exit system\n");
while (scanf ("%d", &n) ==1)
{
GetChar ();
if (n==1)
{
printf ("Please input want store good ' num name Count price\n");
scanf ("%d%s%d%d", &good.num,good.name,&good.count,&good.price);
fprintf (FP, "%5d%16s%5d%5d\n", Good.num,good.name,good.count,good.price);
printf ("Store success\n");
}
else if (n==2)
{
int flag;
Rewind (FP);
while (1)
{
FLAG=FSCANF (FP, "%d%s%d%d\n", &good.num,good.name,&good.count,&good.price);
if ( -1==flag| | 0==flag)
{
printf ("\nlist above is all good\n\n\n");
Break
}
printf ("%5d%16s%5d%5d\n", Good.num,good.name,good.count,good.price);
}
}
else if (n==3)
{
Char str[32];
int find=0;
int flag;
Rewind (FP);
printf ("Please input want seek good name\n");
scanf ("%s", str);
GetChar ();
while (1)
{
FLAG=FSCANF (FP, "%d%s%d%d\n", &good.num,good.name,&good.count,&good.price);
if ( -1==flag| | 0==flag)
{
if (find==0)
printf ("\ni am sorry not having you want seek good\n\n\n");
Else
printf ("\nabove list is your want seek all good\n\n");
Break
}
if (strcmp (str,good.name) ==0)
{
find++;
printf ("\n%5d%16s%5d%5d\n", Good.num,good.name,good.count,good.price);
}
}
}
else if (n==4)
{
int number;
int flag;
Rewind (FP);
printf ("Please input want alter good ' s num\n");
scanf ("%d", &number);
GetChar ();
while (1)
{
int place= (int) ftell (FP);
FLAG=FSCANF (FP, "%d%s%d%d\n", &good.num,good.name,&good.count,&good.price);
if ( -1==flag| | 0==flag)
{
printf ("Not having fine you want alter num\n");
Break
}
if (number==good.num)
{
printf ("Please input altered ' information\n");
scanf ("%d%s%d%d", &good.num,good.name,&good.count,&good.price);
Fseek (Fp,place,seek_set);
fprintf (FP, "%5d%16s%5d%5d\n", Good.num,good.name,good.count,good.price);
printf ("Alter success!\n");
Break
}
}

}
Else if (n==5)
{
int success=0;
int number;
int place_1;
int flag;
Rewind (FP);
printf (" Please input want delete good ' s num\n ");
scanf ("%d", &number);
GetChar ();
while (1)
{
int place= (int) ftell (FP);
flag=fscanf (FP, "%d%s%d%d\n",&good.num,good.name,& Good.count,&good.price);
If ( -1==flag| | 0==flag)
{
//printf ("Not having fine you want delete num\n");
Fseek (Fp,place_1,seek_set);
fprintf (FP, "%c", EOF);
printf ("delete success\n!");
break;
}
if (success)
{
fseek (fp,place_1,seek_set);
fprintf (FP,%5d%16s%5d%5d\n, Good.num,good.name, Good.count,good.price);
}
if (number==good.num)
{
Success=1;
}
Place_1=place;
}

}
else if (n==6)
{

}
else if (n==7)
{
Fclose (FP);
printf ("You exit success Welcome come again\n");
Break
}
Else
{
printf ("Your input error please input again\n\n");
}
printf ("Please input your select function\n\n");
printf ("----1-------------store good\n");
printf ("----2------------browse good\n");
printf ("----3--------------seek good\n");
printf ("----4-------------alter good\n");
printf ("----5------------Delete good\n");
printf ("----6--------------rank good\n");
printf ("----7------------exit system\n");

}
return 0;
}

C standard I/O build a file repository