give a sample program, that will determine if a password entered by the user mee

Question

give a sample program, that will determine if a password entered by the user meets the following criteria:
The password entered is not the user's name. That is, ask the user to enter his/her name before asking for the password. Use the strcmp function from the cstring library to determine if the password is the user's name.
-should contain no fewer than 8 characters and no more than 12 characters.
-must contain at least one upper case letter and at least one lower case letter.
-must contain at least one digit.
-must contain at least one non-alphanumeric character.
-may not contain any spaces.

If the password meets the above criteria, a message should be displayed stating that the password is valid. Do not redisplay the password! If the password does not meet the above criteria, display a message listing what all the problems/deficiencies are. For example, if the user enters abcdef12, the messages should be similar to this:

Your password is invalid for the following reasons:
A valid password must contain at least one uppercase letter.
A valid password must contain at least one non-alphanumeric character.

The program should allow up to 3 attempts to enter a valid password. If, after 3 attempts, a valid password has not been entered, the program should state that the user must wait an hour before trying again.

the program should include the following:
The program must have at least 5 functions in addition to the main function.
The program must use char arrays, must use the "built-in" character-testing functions found in the cctype library, and must use the strlen and strcmp functions in the cstring library.

Explanation / Answer

please rate - thanks

#include <iostream>
#include <cctype>
using namespace std;
int checkchars(char[]);
int checkdigit(char[]);
int checkalpha(char[]);
int checkletters(char[]);
int checkblanks(char[]);

int main()
{char pw[20];
char name[20];
int a,b,c,d,e,count=0;
cout<<"Enter your name: ";
cin.getline(name,20);
do
{count++;
a=1;
cout<<"Enter a password: ";
cin.getline(pw,20);
if(strcmp(pw,name)==0)
     cout<<"password cannot be your name ";
else
{
a=checkchars(pw);
b=checkdigit(pw);
c=checkalpha(pw);
d=checkletters(pw);
e=checkblanks(pw);
cout<<" ";

}       
}while(a+b+c+d+e!=0&&count<3);
if(a+b+c+d==0)  
    cout<<pw<<" is a valid password ";
else
    cout<<"You must wait an hour before trying again. ";    
              
system("pause");
return 0;       
}
int checkchars(char pw[])
{if(strlen(pw)<8||strlen(pw)>12)
    {cout<<"must have bewteen 8 and 12 characters ";
     return 1;
       }  
return 0;
}
int checkdigit(char pw[])
{int i,digit=0;
for(i=0;i<strlen(pw);i++)
   if(isdigit(pw[i]) )
         digit++;
if(digit==0)
      {cout<<"must have at least 1 digit ";
       return 1;
       }  
return 0;  
}
int checkalpha(char pw[])
{int alpha=0,i;
for(i=0;i<strlen(pw);i++)
    if(!isalnum(pw[i]))
         alpha++;
if(alpha==0)
      {cout<<"must have at least 1 non-alphabetic character ";
       return 1;
       }  
return 0;
}
int checkblanks(char pw[])
{int alpha=0,i;
for(i=0;i<strlen(pw);i++)
    if(pw[i]==' ')
         alpha++;
if(alpha!=0)
      {cout<<"may not contain any spaces ";
       return 1;
       }  
return 0;
}
int checkletters(char pw[])
{int upper=0,lower=0,i;
for(i=0;i<strlen(pw);i++)
    if(isupper(pw[i]))
         upper++;
    else if(islower(pw[i]))
         lower++;
if(lower==0||upper==0)
      {cout<<"must contain at least one upper case letter and at least one lower case letter. ";
       return 1;
       }  
return 0;
}

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