Banking system (PROJECT -2)

#include<stdio.h>
#include<conio.h>
#include<process.h>
struct mybank
{
int acc_no,bal;
int age;
char name[20];
int d,c,t;
};
int a,i=101,n;
void creation(struct mybank b[]);
void withdrawl(struct mybank b[],int);
void deposit(struct mybank b[],int);
void check_bal(struct mybank b[],int);
void transfer(struct mybank b[],int);
int transaction(struct mybank b[],int);
int main()
{
struct mybank b[10];
int choice;
clrscr();
printf("\n////////////////////////WELCOME TO MYBANK//////////////////////////////////////\n");
printf("\nEnter the no. of account you want to create ");
scanf("%d",&n);
for(a=0;a<n;a++)
{
creation(b);
}
printf("\n*******************************************************************");
do
{
	printf("\n1=> Check balance\n2=> withdrawal\n3=> Deposit\n4=> To Transfer Money\n5=> To Create Next Two Accounts\n6=> Account Transaction History\n7=> EXIT");
	printf("\nenter choice (1-7)");
	scanf("%d",&choice);
	clrscr();
	switch(choice)
	{
	case 1 :printf("\n\n*****************Account current balance***********************");
		check_bal(b, n);
		printf("\n*******************************************************************");
		break;
	case 2 :printf("\n\n*******************Withdrawal************************************");
		withdrawl(b, n);
		printf("\n*******************************************************************");
		break;
	case 3 :printf("\n\n********************Deposit***************************************");
		deposit(b, n);
		printf("\n***********************************************************************");
		break;
	case 4 :printf("\n\n***********************Transfer***************************************\n");
		transfer(b, n);
		printf("\n*************************************************************************");
		break;
	case 5 :main();
		break;
	case 6 :printf("\n\n**********************Transaction***************************************\n");
		transaction(b, n);
		printf("\n*************************************************************************");
		break;
	case 7 :exit(0);
		break;
	default :break;
	}
}
while(choice!=8);
return 0;
}

void creation(struct mybank b[])
{
int age;
{
printf("\n***********************CREATE ACCOUNT #%d**********************************",a+1);
printf("\nYour account no. is : %d",i);
b[a].acc_no=i;
printf("\nEnter Your Age ");
scanf("%d",&age);
b[a].age=age;
if(age>=18)
{
	printf("Enter Your Name ");
	scanf("%s",&b[a].name);
	printf("Your Initial Deposit is : 500");
	b[a].bal=500;
}
else{
printf("THIS BANK DOES NOT PROVIDE SERVICES TO THE CUSTOMERS AGED UNDER 18");
    }
}
i++;
}
void withdrawl(struct mybank b[],int n)
{
int acc,amt;
printf("\nEnter Your Account No. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
if(acc==b[a].acc_no)
   {
   printf("Enter amount ");
scanf("%d",&amt);
b[a].d=amt;
	if(amt<=b[a].bal)
	{
	    b[a].bal-=amt;
	    printf("%d : is the remaining balance after debited",b[a].bal);
	    printf("\n\n\tAmount is Sucessfully Withdrawn\n");
		printf("\tCheck Balance For Confirmation\n");
	    break;
	}
       else
       printf("\ninsufficient balance");
   }
}
}
void deposit(struct mybank b[],int n)
{
int acc,am;
printf("\nEnter account no. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
   if(acc==b[a].acc_no)

   {
	printf("\nEnter amount ");
	scanf("%d",&am);
	b[a].c=am;
	b[a].bal+=am;
       printf("%d : is balance after credit",b[a].bal);
       printf("\n\n\tAmount is Sucessfully Deposited\n");
		printf("\tCheck Balance For Confirmation\n");
   }
}
}
void check_bal(struct mybank b[],int n)
{
int acc;
printf("\nEnter accont no. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
    if(acc==b[a].acc_no)
    {
     printf("\nYour accont no. is %d",b[a].acc_no);
     printf("\nAccount Holders Age is %d",b[a].age);
     printf("\nAccount Holder name is %s",b[a].name);
     printf("\nACCOUNT BALANCE IS %d",b[a].bal);
    }
}
}
void transfer(struct mybank b[],int n)
{
int acc,amt;
printf("Enter Your Account no. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
     if(acc==b[a].acc_no)
     {
   printf("Enter amount ");
scanf("%d",&amt);
b[a].t=amt;
	if(amt<=b[a].bal)
	{
	    b[a].bal-=amt;
	    break;
	}
       else
       printf("\nInsufficient balance");
   }
}
printf("\nTransfer Money To Account no. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
   if(acc==b[a].acc_no)

   {
	b[a].bal+=amt;
       printf("%d : is transfered to the account",amt);
       printf("\n\n\tAmount is Sucessfully Transfered\n");
		printf("\tCheck Balance For Confirmation\n");
   }
}
}
int transaction(struct mybank b[],int n)
{
int acc;
printf("\nEnter account no. ");
scanf("%d",&acc);
for(a=0;a<n;a++)
{
	if(acc==b[a].acc_no)
	{
	printf("%d is debited\n",b[a].d);
	printf("%d is credited\n",b[a].c);
	printf("%d is tranfered\n",b[a].t);
	}
}
return 0;
}