fnc.c

#include<stdio.h>
#include<time.h>
#include<string.h>
#include<conio.h>
#include"headr.h"
struct user
{
    int accno;
    char name[30];
    char pswrd[30];
    float balance;
} u[10];
struct admin
{
    char username[30];
    char password[30];
} adm,adm1;
static time_t start;
time_t end;
int r=10;//rte of interest =10%
double t;
int acc=101;
int acc1;
char pswrd1[10];
int flag=0;
int c2;
char c3;
float amt;
int i,j;
static int n=0;
void admin()
{
    FILE *f=fopen("admin.txt","r+");
    printf("\n*************************************");
    printf("\n\t\tLOGIN AS ADMIN PAGE");
    printf("\n*************************************");
    c:
    printf("\nENTER USERNAME: ");
    scanf("%s",adm1.username);
    fscanf(f,"%s%s",adm.username,adm.password);
   while(flag==0)
    {
        if(strcmp(adm.username,adm1.username)==0)
        {
            b:
            printf("ENTER PASSWORD: ");
            scanf("%s",adm1.password);
            if(strcmp(adm1.password,adm.password)==0)
            {
                printf("\nYOU HAVE SUCCESSFULLY LOGGED IN AS ADMIN....!!");
                flag=1;
            }
            else
            {
                printf("WRONG PASSWORD");
                goto b;
            }
        }
    else
    {
        printf("\nINVAID USERNAME");
        goto c;
    }
    }
}
void user()
{
    printf("\n*************************************");
    printf("\n\t\tLOGIN AS USER ");
    printf("\n*************************************");
    l:
    printf("\nENTER ACCOUNT NO: ");
    scanf("%d",&acc1);
    printf("ENTER PASSWORD: ");
    scanf("%s",&pswrd1);
    for(i=0;i<=(n-1);i++)
    {
         if(acc1==u[i].accno)
           {
                flag=1;
                break;
           }
         else
            flag=0;
    }
    if(flag==1)
    {
        a:
        if(strcmp(pswrd1,u[i].pswrd)==0)
        {
            printf("YOU HAVE SUCCESSFULLY LOGGED IN.....!!");
            system("cls");
            do
                {
                        printf("\n*************************************");
                        printf("\n\t\tLOGIN AS USER PAGE ");
                        printf("\n*************************************");
                        printf("\n\n\t1.CHECK DETAILS\n\t2.WITHDRAW MONEY\n\t3.DEPOSIT MONEY\n\t4.EXIT\n\n\tENTER YOUR CHOICE : ");
                        scanf("%d",&c2);
                        switch(c2)
                        {
                            case 1: check();
                                    break;
                            case 2: withdraw();
                                    break;
                            case 3: deposit();
                                    break;
                            case 4: exit(0);
                        }
                        printf("\n\nDO YOU WISH TO VISIT LOGIN AS USER PAGE(y/n)?? ");
                        system("cls");

                        c3=getche();
                } while(c3=='y');
        }
        else
        {
             printf("ENTER WRONG PASWORD");
             printf("\nRE-ENTER PASSWORD: ");
             scanf("%s",pswrd1);
             goto a;
        }
    }
    else
    {
        printf("INVALID ACCOUNT NUMBER");
        printf("\nENTER A VALID ACCOUNT NUMBER: ");
        scanf("%d",&acc1);
        goto l;
    }
}
void createacc()
{
    system("cls");
    printf("\n*************************************");
    printf("\n\t\tACCOUNT CREATION ");
    printf("\n*************************************");
    start=time(NULL);
    printf("\nACCOUNT NUMBER IS %d",acc);
    u[n].accno=acc;
    printf("\n\nENTER NAME: ");
    scanf("%s",u[n].name);
    printf("ENTER PASSWORD: ");
    scanf("%s",u[n].pswrd);
    printf("ENTER BALANCE: ");
    scanf("%f",&u[n].balance);
    printf("\nACCOUNT IS CREATED SUCCESSFULLY.....");
    acc++;
    n++;
    system("cls");
}
void check()
{
    end=time(NULL);
    t=difftime(start,end);
    u[i].balance+=((u[i].balance*t*r)/(100*365*24*3600));
    printf("\nYOUR ACCOUNT BALANCE: %f",u[i].balance);
}
void withdraw()
{
    end=time(NULL);
    t=difftime(start,end);
    u[i].balance+=(u[i].balance*t*r)/(100*365*24*3600);
    printf("\nYOUR CURRENT BALANCE: %f",u[i].balance);
    na:
    printf("\nENTER AMOUNT YOU WANT TO WITHDRAW: ");
    scanf("%f",&amt);
    if(amt>u[i].balance)
    {
        printf("\nLIMIT EXCEED...\n");
        goto na;
    }
    u[i].balance-=amt;
    printf("\nYOUR NEW BALANCE: %f",u[i].balance);
}
void deposit()
{
    end=time(NULL);
    t=difftime(start,end);
    u[i].balance+=(u[i].balance*t*r)/(100*365*24*3600);
    printf("\nYOUR CURRENT BALANCE: %f",u[i].balance);
    printf("\nENTER AMOUNT YOU WANT TO DEPOSIT: ");
    scanf("%f",&amt);
    u[i].balance+=amt;
    printf("\nYOUR NEW BALANCE: %f",u[i].balance);
}
void deleteacc()
{
    printf("\nENTER ACCOUNT NUMBER: ");
    scanf("%d",&acc1);
    for(i=0;i<=n-1;i++)
    {
        if(acc1==u[i].accno)
            {
                for(j=i;j<=n-1;j++)
                {
                    u[i].accno=u[i+1].accno;
                    u[i].balance=u[i+1].balance;
                    strcpy(u[i].name,u[i+1].name);
                    strcpy(u[i].pswrd,u[i+1].pswrd);
                }
                printf("\nACCOUNT IS DELETED SUCCESSULLY..!!!");
                break;
            }
        else
            continue;

    }
}