How to use delete in string in c++ With using class (delete information)

[memosa]

Hi, friends:

This is my programme (work on Microsoft visual c++) and I have two question .

First, I want to say that there is no error but I need a little help.

This is a small programme about Bank :


it's work but my question is (about 6-closing account) on function closing account....
.....How could I delete the information in this function to close account by using string (I know how to delete in pointer,but
here I don't use pointer ,I want to use string) should I make it zero's (but I don't think so )
...I really need a help........

Please Help




and I have another question but not importante like the first one , that if I want to use two class in the
programme not one class , I'll make it class Bank (which have making new account & closing account & Zakat account) and the
other class is class account (which have the deposit & the withdrawal & the display of information for just one account)

 #include <iostream> 
#include <string> //Must include this to use class string 
 
using namespace std; 
class account 
{ 
private: 
//int size; 
//int customer; 
string firstname,lastname,name; 
double accountbalance,amount1,amount2; 
int index; 
 
double zakat1,zakat; 
int num,i,month; 
/*static*/ int counter; 
 
 
public: 
 
account(){index=1;counter=0;cout<<"account constructor\n";} 
void newaccount(); 
void closeaccount(); 
void calzakat(); 
~account(){cout<<"account destrurctor\n";} 
void depositing(); 
void withdrawal(); 
void displayaccount(); 
}; 
//static int bank::counter=0; 
void account::newaccount() 
{ 
cout<<"enter the customer firstname,lastname,account balance\n"; 
//customer=index; 
cin>>firstname; 
cin>>lastname; 
name=firstname+lastname; 
cin>>accountbalance; 
index++; 
counter++; 
} 
void account::closeaccount() 
{ 
//name=' '; 
accountbalance=00.00; 
counter--; 
/* 
for(int y=0;y<index;y++) 
{ 
if((y==num)||(y>num)) 
{ 
customer[y]=customer[y+1]; 
name[y]=name[y+1]; 
accountbalance[y]=accountbalance[y+1]; 
} 
} 
customer[size-1]; 
name[size-1]; 
accountbalance[size-1];*/ 
} 
void account::calzakat() 
{ 
cout<<"enter how many month is ago from last deposite money in the account th to calculate zakat\n"; 
cin>>month; 
if((accountbalance>4000)&&(month>12)) 
{ 
zakat1=((accountbalance*2.5)/100); 
accountbalance=accountbalance-zakat1; 
cout<<" the name of the customer "<<name; 
cout<<" the account balance "<<accountbalance<<"\n"<<"the zakat is\n"<<zakat1<<"\n"; 
} 
else 
{ 
zakat1=00.00; 
cout<<" the name of the customer "<<name; 
cout<<" the account balance "<<accountbalance<<"\n"<<zakat1<<"\n"; 
} 
zakat=zakat+zakat1; 
 
} 
 
 
 
 
void account::depositing() 
{ 
cout<<"enter the amount you want to depositing\n"; 
cin>>amount1; 
accountbalance=accountbalance+amount1; 
cout<<"the account balance after the depositing\n"<<accountbalance; 
} 
void account::withdrawal() 
{ 
 
cout<<"enter the amount you want to withdrawal\n"; 
cin>>amount2; 
if (amount2<=accountbalance) 
{ 
accountbalance=accountbalance-amount2; 
cout<<"the account balance after withdrawal from it\n"; 
cout<<accountbalance; 
} 
else 
cout<<"sorry..the account is less than the amount you want to withdrawal\n"; 
 
} 
 
void account::displayaccount() 
{ 
cout<<"the name of customer is\n"<<name<<"\nthe account balance is\n"<<accountbalance<<"\n"; 
} 
 
 
int main() 
{ 
int choice,accountnum,x; 
account ob[3]; 
 
do 
{ 
cout<<"enter your choice\n"; 
cout<<"1-Opening a new account for a customer\n"; 
cout<<"2-deposit to the account\n"; 
cout<<"3-withdrawal from the account\n"; 
cout<<"4-Zakat calculate and debits the account zakat\n"; 
cout<<"5-display the information of account\n"; 
cout<<"6-closing an account\n"; 
cout<<"7-display all account information\n"; 
cout<<"8-exit\n"; 
cin>>choice; 
switch(choice) 
{ 
case 1: 
 
cout<<"enter the account number from 0 to 14\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<"the account has the number "<<x; 
ob[accountnum].newaccount(); 
break; 
case 2: 
cout<<"enter the account number from 0 to 14 to depositing it\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<"the account has the number "<<x; 
ob[accountnum].depositing(); 
break; 
case 3: 
cout<<"enter the account number from 0 to 14 to withdrawal from it\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<"the account has the number "<<x; 
ob[accountnum].withdrawal(); 
break; 
case 4: 
cout<<"enter the account number from 0 to 14 to calculate zakat to it\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<"the account has the number "<<x; 
ob[accountnum].calzakat(); 
break; 
case 5: 
cout<<"enter the account number from 0 to 14 to display it\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<" the account that has the number "<<x; 
ob[accountnum].displayaccount(); 
break; 
case 6: 
cout<<"enter the account number from 0 to 14 to close it\n"; 
cin>>accountnum; 
x=accountnum; 
cout<<"the account has the number "<<x; 
ob[accountnum].closeaccount(); 
break; 
case 7: 
int i; 
for(i=0;i<3;i++) 
{ 
cout<<"the zakat of the account that has the number "<<i; 
ob[i].displayaccount(); 
} 
break; 
case 8: 
cout<<"the exit\n"; 
break; 
default: 
cout<<"invalid choice\n"; 
break; 
}//end switch 
}//end while 
while(choice!=8); 
return 0; 
} 
 

Thank you all very much..........I hope if any one can help me ..
..........I need it tomorrow .... :o

[memosa]

thanks i solved it with flag

[phantomboy]

memosa is there any chance to post your solution...
I have th same problem and i have to give my work yesterday...

The code works in the same way in c++??