this is the run results:

This is a function of its registered accounts (input binary function) :

 void show1 () {
//initialization information 
Cout & lt; <"Please enter account:"; 
String acNumber; 
Cin & gt;> AcNumber; 
Cout & lt; <"Please input the user name:"; 
String name; 
Cin & gt;> name; 
Cout & lt; <"Please enter the id number:"; 
String id; 
Cin & gt;> Id; 
Cout & lt; <"Please enter the address:"; 
String addr. 
Cin & gt;> Addr. 
Cout & lt; <"Please enter the amount of deposit:"; 
Double sumOfMonney; 
Cin & gt;> SumOfMonney; 
//cout & lt; <"Please set the account password:"; 
String p; 
P=getPassword (); 
//create account 
The Account newaccount (acNumber, id, name, addr, sumOfMonney, p); 

//open a binary file storage account 
String fname="storeInfo"; 
Fstream fs (fname, the ios: : binary | ios: : out); 
if (! Fs) {
Cout & lt; <"Store file open failed" & lt; } 
//acNumber 
Int len=newaccount. GetAcNumber (.) length (); 
Fs. Write ((char *) & amp; Len, sizeof (int)); 
Fs. Write (newaccount. GetAcNumber () c_str (), len); 
//id 
Len=newaccount. GetID (). The length (); 
Fs. Write ((char *) & amp; Len, sizeof (int)); 
Fs. Write (newaccount. GetID () c_str (), len); 
//the name 
Len=newaccount. GetName (). The length (); 
Fs. Write ((char *) & amp; Len, sizeof (int)); 
Fs. Write (newaccount. GetName () c_str (), len); 
//addr 
Len=newaccount. GetAddr (.) length (); 
Fs. Write ((char *) & amp; Len, sizeof (int)); 
Fs. Write (newaccount. GetAddr () c_str (), len); 
//sumOfMonney 
Double s=newaccount. GetSumOfMonney (); 
Fs. Write ((char *) & amp; S, sizeof (double)); 
//password 
Len=newaccount. GetPassword (.) length (); 
Fs. Write ((char *) & amp; Len, sizeof (int)); 
Fs. Write (newaccount. GetPassword () c_str (), len); 
//state 
Bool state=true; 
Fs. Write ((char *) & amp; The state, sizeof (bool)); 
//close the file 
Fs. Flush (); 
Fs. The close (); 
Cout & lt; <"New account success!" } 

This is a function of its display user information

//read the account information 
Void show2 () {
//according to the index of information user accounts 
Cout & lt; <"Please input your account:" & lt; String num. 
Cin & gt;> Num. 
Fstream fs (" storeInfo ", the ios: : binary | ios: : in); 
if (! Fs) {
Cout & lt; <"Failed to read the account information, please ensure the account has been established," & lt; 
} 
The Account a; 
//determine whether file index finished 
while (! Fs. Eof ()) {
Char buffer [100]={0}; 
Int len=0; 
//acNumber 
Fs. Read ((char *) & amp; Len, sizeof (int)); 
Fs. Read (buffer, len); 
A.s etAcNumber (buffer); 
//id 
Fs. Read ((char *) & amp; Len, sizeof (int)); 
Fs. Read (buffer, len); 
A.s etID (buffer); 
//the name 
Fs. Read ((char *) & amp; Len, sizeof (int)); 
Fs. Read (buffer, len); 
A.s etName (buffer); 
//addr 
Fs. Read ((char *) & amp; Len, sizeof (int)); 
Fs. Read (buffer, len); 
A.s etAddr (buffer); 
//sumOfMonney 
Double monney=0; 
Fs. Read ((char *) & amp; Monney, sizeof (double)); 
A.s etSumOfMonney (monney); 
//password 
Fs. Read ((char *) & amp; Len, sizeof (int)); 
Fs. Read (buffer, len); 
A.s etPassword (buffer); 
//state 
Bool state=true; 
Fs. Read ((char *) & amp; The state, sizeof (bool)); 
Fs. Read (buffer, len); 
A.s etState (buffer); 
//find user accounts 
If (al-qeada etAcNumber ()==num) {
//the password protect user account 
for (int i=0; I & lt; 3; I++) {
Cout & lt; <"Please first" & lt; String p; 
P=getPassword (); 
//password input is correct, according to user information 
If (p==al-qeada etPassword ()) {
A.s howInfo (); 
Fs. The close (); 

return; 
} 
//input error, and input the opportunity 
The else {
If (I & lt; 2) 
Cout & lt; <"Wrong password, please enter again." & lt; } 

} 
//input number out, back to the main menu 
Cout & lt; <"Password is not correct,"; 

return; 
} 

} 
//not index to the account 
Cout & lt; <"This account was not found, please register" & lt; 

} 

CodePudding user response:

Read/write a string, it is best to get the length information is accurate

CodePudding user response:

reference 1/f, the truth is right or wrong response:

, speaking, reading and writing string, best to get the length information accurate

how clear ah, this all have already took the length, feeling eventually use char to change come back,

CodePudding user response:

Learn to step through, see what was read out?

CodePudding user response:

The

reference 2 floor? A???? Q reply:

Quote: reference 1/f, the truth is right or wrong response:

, speaking, reading and writing string, best to get the length information accurate

how clear ah, this all have already took the length, feeling eventually use char to change back,

Because buffer began to read a long back and read the short, so read behind the front end will contain the value, each time you read the new fields, memset

CodePudding user response:

refer to 4th floor, Simple, Soft reply:

Quote: refer to the second floor? A???? Q reply:

Quote: reference 1/f, the truth is right or wrong response:

, speaking, reading and writing string, best to get the length information accurate

how clear ah, this all have already took the length, feeling eventually use char to change back,

Because buffer began to read a long back and read the short, so read behind the front end will contain the value, each time you read the new fields, memset

Because when read read will not be attached at the back endnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull