[Help] array for my assignment

how to solve this problem?
please help!

#include<iostream.h>
#include<conio.h>

void main()
{

int acct;
char name[50];
char add[50];
int opt;
int index=0;

clrscr();

do{
cout<<"Menu"<<endl;
cout<<"1 add"<<endl;
cout<<"2 view"<<endl;
cout<<"3 exit"<<endl;
cout<<"Choice: ";cin>>opt;

switch(opt)
{
case 1:
clrscr();
cout<<"Enter Account: ";cin>>acct[index];
cout<<"Enter Name: ";cin>>name[index];
cout<<"Enter Add: ";cin>>add[index];
index++;
break;

case 2:
clrscr();
cout<<"Entered Data------"<<endl;
for(int a=0;a<index;a++)
{
cout<<acct[a] <<"\t" <<name[a] <<"\t" <<add[a]<<endl;
}
break;

case 3:
cout<<"Exit";
break;
}

}while(opt!=3);
getch();
}