Re: simple program attached
From: gangadhar npk (gangadhar_npk__at_nospam.plz)
Date: 04/30/04
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Date: Fri, 30 Apr 2004 17:23:03 +0530
hi,
I dunno what is the format you are writing the data.
But I suggest a small change,
if((search_report=fopen("c:\\addreport.txt","r")) == NULL)
{
printf("File open Error....");
return;
}
you were continuing with the operation even after the file open failed.
And how did u enter the date ? did u enter it as 11/12/2003 (or
something like that). Then scanf would not return. Try with entering the
date as 11 12 2003 i.e. seperated by spaces and check
hth
gangadhar
nmp wrote:
> I'm a new user of Visual C++, I face the problem to make use of the rewind() function. Hereby I list down my simple program source code for you who can trace out my program's bugs as below:-
>
> //*program that search report
> #include <stdio.h>
> #include <conio.h>
> #include <ctype.h>
> #include <string.h>
> #include <stdlib.h>
> //============================================================================
> #define MAX 500//defining constant
>
> typedef struct{
> char day[3];
> char month[3];
> char year[5];
> }mydate;
>
>
> int checkDate (mydate);
>
> void main()
> {
> char name[20], answer='Y',sfile='Y',smodify='Y';
> char company[40],activity[MAX];
> int id, target;
> char contact[15];
> char address[30];
> char tel[10];
> int found = 0, valid=1;
> mydate dob;
>
> FILE *search_report,*temp; //*pointers to pre-defined structure FILE
>
> //
> if((search_report=fopen("c:\\addreport.txt","r")) == NULL)//*and assign to file pointr
> printf("File open Error....");
> else
>
> temp=fopen("c:\\temp.txt","w+");
>
> do{
> system("cls");
> printf("\t\t\tTOWA BUSINESS MACHINE SDN. BHD.\t\t\n");
> printf("\t\t\t SALES REPORTS SYSTEM\t\t\n\n");
> printf("\t\t\t\tSEARCH REPORT\t\t\n\n");
>
>
> fflush(stdin);
> printf("ID to Find :");
> scanf("%d",&target);
>
> rewind(search_report);
>
> while(1)
> {
> if (feof(search_report))
> {
> printf("Eof.....");
> break;
>
> }
> do
> {
> fflush(stdin);
> printf("DATE(dd/mm/yyyy) :");
> scanf("%s %s %s",dob.day,dob.month,dob.year);
> valid = checkDate(dob);
>
> if(valid != 1)
> {
> printf("Error in date....\n");
> getch();
> }
> }while(valid == 0);
>
> fflush(stdin); fflush(stdin);
> fscanf(search_report,"%d\n",&id);
> fscanf(search_report,"%s\n",dob.day);
> fscanf(search_report,"%s\n",dob.month);
> fscanf(search_report,"%s\n",dob.year);
> fscanf(search_report,"%s\n",name);
> fscanf(search_report,"%s\n",company);
> fscanf(search_report,"%s\n",address);
> fscanf(search_report,"%s\n",tel);
> fscanf(search_report,"%s\n",contact);
> fscanf(search_report,"%s\n",activity);
>
> if(id == target && valid == checkDate(dob))
> {
> printf("\n\tRecord Found:\n");
> printf("\t------------\n");
> printf("Id = %d\n",id);
> printf("DATE :%s/%s/%s\n",dob.day,dob.month,dob.year);
> printf("NAME :%s\n",name);
> printf("COMPANY:%s\n",company);
> printf("TEL :%s\n",tel);
> printf("CONTACT:%s\n",contact);
> printf("ACTIVITY:%s\n\n",activity);
> }
>
> printf("Do You Want To Modify[Y/N]:");
> smodify=getchar();
>
> if(smodify=='Y'||smodify=='y')
> {
> fflush(stdin); fflush(stdin);
> printf("NAME :");
> gets(name);
>
> printf("COMPANY :");
> scanf("%s",company);
>
> printf("ADDRESS :");
> scanf("%s",address);
>
> printf("TEL :");
> scanf("%s",tel);
>
> printf("CONTACT :");
> scanf("%s",contact);
>
> printf("ACTIVITY :");
> scanf("%s",activity);
> fflush(stdin);
>
> }
> printf("DO YOU WANT SAVE[Y/N]:");
> sfile=getchar();
>
> if (sfile=='Y'||sfile=='y')
>
> fprintf(temp,"%s %s/ %s/ %s/ %s/ %s\n",
> name,company,address,tel,contact,activity);
>
>
> fflush(stdin);fflush(stdin);fflush(stdin);fflush(stdin);
> printf("\n\nContinue NEXT [Y/N]:");
> answer=toupper(getchar());
> fflush(stdin);
> }
> }while(answer!='N');
>
> printf("\t\t\t THANK YOU!!\n\n");
>
> fclose(search_report);//close file
>
> remove("c:\\add_report.dat");
> rename("c:\\temp.dat","c:\\add_report.dat");
> }
>
> int checkDate(mydate newDate)
> {
> int dd=0, mm=0, yy=0;
> int valid = 1; // true before checking
>
> dd = atoi(newDate.day);
> mm = atoi(newDate.month);
> yy = atoi(newDate.year);
>
> // printf("The dd %d mm %d yy %d\n",dd,mm,yy);
> // getch();
>
> if(yy ==0 || yy < 1990 || yy > 2200)
> valid = 0;
> if(mm <=0 || mm >12)
> valid = 0;
> if (dd <= 0 || dd > 31)
> valid = 0;
>
> return valid;
> }
>
> The simple program above can be compiled without errors and warnings but just cannot do the searching correctly. It prompt up message to terminate the program after i key in the 'DATE', then the whole program cannot proceed. Please look through and give any suggestion for the solution. Thanks!
>
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