C Language: Analog implementation of a password to enter the automatic withdrawal program

Simulate a program to enter a password for automatic withdrawals

Program:

#include <stdio.h>

#include <windows.h>

#include <string.h>

int Main ()

{

Char *p = "123456" ;

Char passwd[10];

int i = 0;

for (i = 0; i < 3; i++)

{

printf ("Please enter password (up to 9 digits):");

scanf ("%s", passwd);

if (strcmp (p, passwd) = = 0) //Same as 0, password correct

{

Break ;

}

Else

{

printf ("Password input error!\n");

}

}

if (i = = 3)

{

printf ("three times password input error, shut down the system after 5 seconds \ n");

Sleep (5000);

}

Else if (i<3)

{

printf ("take money successfully \ \");

}

return 0;

}

Result 1:

Please enter your password (maximum 9 digits): 1237689

Password input Error!

Please enter your password (maximum 9 digits): 943209

Password input Error!

Please enter your password (maximum 9 digits): 123456

Take money to succeed

Please press any key to continue ...

Result 2:

Please enter your password (maximum 9 digits): 132147

Password input Error!

Please enter your password (maximum 9 digits): 98574

Password input Error!

Please enter your password (maximum 9 digits): 07534

Password input Error!

Three password input errors, shutting down the system after 5 seconds

Please press any key to continue ...

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C Language: Analog implementation of a password to enter the automatic withdrawal program