[C/++] Random Password Generator

[Guest GoSu.SpeeD]

Well i didn't do this recently, but i thought I'd post it up because it's quite easy to understand, i also commented it so you should be able to understand what's going on easily

/* 

*   Random Password Generator 

*   Coded By Shoxin/Akimoko/GoSu.Speed ETC.

* 

* Generates a random password between 13-21 characters long ( usually ) 

* Generated password is saved in a newly created text document called 

* passwords. Upon the next execution of the password generator, 

* the new password will be stored in passwords.txt but on the next line. 

*/ 


#include <stdio.h> 

#include <windows.h> 


int main() 

{ 

    char author[MAX_PATH] = "GoSu.SpeeD"; 

    

    // Sets Console Title and console text color

    SetConsoleTitle("Coded By GoSu.SpeeD // Random Password Generator"); 

    SetConsoleTextAttribute( GetStdHandle( STD_OUTPUT_HANDLE ), FOREGROUND_BLUE | FOREGROUND_INTENSITY ); 

    // Sets Console Title and console text color

    

    unsigned char c; 

    int a; // for the return value of getchar()

    int d; 

    int e = 40; // increase this for a longer password


    srand(GetTickCount()); 


    printf("\t\t Random Password Generator\n\n");  // our menu

    printf("Options:\n\n" 

          "1 - Generate a password\n" 

          "2 - Exit\n\n" 

          ">"); 


    a = getchar(); 

    if (a == '1') // if option picked is 1

    { 

        FILE *fp; // create file pointer

        fp = fopen("Passwords.txt", "a"); // open file for appending

        for (d = 0; d < e; d++) // loop what's inside, until d is equal to e

        { 

            c = (rand() % 255); // 255 = Number of ASCII Codes

            

            if(isgraph(c)) // is the contents of "c" printable?

            { 

                fprintf(fp, "%c", c); // write to file

            } 

        } 

        fprintf(fp, "\n"); // makes sure we start on the next line

        printf("\n\n"); 

        fclose(fp); // close file

        system("cls"); // clear console


        printf("Your generated password is now saved in Passwords.txt\n\n"); 


    } 

    if (a == '2') // if user picks option 2

    { 

        exit(1); // exit

    } 

    fflush(stdin); // flush all that was caught in previous call to getchar()

    getchar(); //pause

    return 0; 

}

[Guest Jacob]

Nice script... although it doesnt fully compile in codeblocks.

line 45:

            if(isgraph(c)) // is the contents of "c" printable?

Gives a build error.

If i remove that line it prints non ansi stuff, my text editor can't print... thus making a lot of rectangle's.