I want to update information i previously stored on a file but cannt do.
My code is
//-----------------------------
//--------------------------------"s"-Structure created--------------------
struct student
{
char regno[20];
//----------------------Pinfo var------------------
char name[50],gender[7],dob[20],otno[20],colg[50],branch[20],hno[10];
int rno;
//----------------------Einfo var------------------
char doj[10];
float teage,twage;
//----------------------Painfo var-----------------
char fname[20],occ[50],ladd[100],cadd[100],ftno[20];
//----------------------Payinfo var----------------
char payj[200],dues[200],smoney[200],mode[20];
//----------------------Remarks var----------------
char remark[900];
//----------------------Marks var------------------
int marks[8],hmarks[8];
//----------------------Event var------------------
char evntname[100];
int evntno;
}s;
//--------------------------------Update----------------------------
void update(int x)
{
FILE *fp;
char name[20],regno[20],ter;
int n,choice,m=0;
clrscr();
if(x==0)
{
do
{
fp=fopen("Student.txt","r+");
printf("\n\nEnter Regno::");
flushall();
gets(regno);
while((fread(&s,sizeof(s),1,fp))==1)
{
n=strcmpi(regno,s.regno);
if(n==0)
{
printf("\n\nWhat Do you want to update?\n1:Personal Information\n2:Educational Information\n3:Parental Information\n4:Payment details\n5:Marks\n6:Remarks\n7:Events\n8:Re-Enter full information\nEnter Your Choice::");
scanf("%d",&choice);
switch(choice)
{
case 1:
pinfo();
break;
case 2:
einfo();break;
case 3:
painfo();break;
case 4:
payinfo();break;
case 5:
marks();break;
case 6:
remarks();break;
case 7:
events();break;
case 8:
add(x);
break;
default:
printf("\n\nYou Entered Wrong choice");
}
fwrite(&s,sizeof(s),1,fp);
m=1;
}
}
if(m==0)
printf("\n\nReg. no. You Entered doesnot match");
fclose(fp);
printf("\n\nDo You Want To Re-Search A Student?(y/n)");
ter=getch();
}while(ter=='y'||ter=='Y');
}
if(x==1)
{
printf("\n\nFaculty");
}
if(x==2)
{
printf("\n\nStaff");
}
}
//--------------------------------------------------------------------I want to know how can i update the information stored previously........
