How do you Create a password program using turbo C?

Answer 1

/*:cool: Guys, This program make a file when its run. Run it and Understand it. and tell me, "can i improve in it more?*/

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

char user[20],fltp[5]=".txt",flname[25],pswrd[35],cnfrm[35],login[35],pchek[35],c,ps,cn,lg;

int i,j,k,l;

FILE *usr;

clrscr();

gotoxy(25,23);

textcolor(12);

cprintf("Enter Your name:");//Note: this may be works as your username also. Name will be unique.

scanf("%s",&user);//Scanf ko graphical bna. entry control

strcpy(flname,user);

strcat(flname,fltp);

usr=fopen(flname,"r");

if(usr==NULL)

{

usr=fopen(flname,"w");

fprintf(usr,"Username: %s",user);

printf("Welcome!\nYou are a new user\nCreat your password below");

printf("\nEnter Password:");

retry:

j=0;

while((ps=getch())!=13)

{

printf("*");

pswrd[j]=ps;

j++;

}

pswrd[j]='\0';

printf("\nConfirm Password:");

k=0;

while((cn=getch())!=13)

{

printf("*");

cnfrm[k]=cn;

k++;

}

cnfrm[k]='\0';

if((strcmp(pswrd,cnfrm))==0)

{

fprintf(usr,"\nPassword: %s",cnfrm);

fclose(usr);

}

else

{

printf("Password didn't match! Try Again...\n");

printf("Enter password again:");

goto retry;

}

}

else

{ gotoxy(25,25);

cprintf("Password:");

l=0;

while((lg=getch())!=13)

{

printf("*");

login[l]=lg;

l++;

}

login[l]='\0';

i=0;

while((c=getc(usr))!= EOF)

{

if(c=='\n')

{

fseek(usr,10,1);

while((c=getc(usr))!= EOF)

{

pchek[i]=c;

i++;

}

}

}

pchek[i]='\0';

if((strcmp(login,pchek))==0)

{

gotoxy(25,27);

textcolor(11);

cprintf("Welcome Back %s",user);

}

else

{

gotoxy(19,27);

textcolor(11);

cprintf("Wrong Password! You are not authorised");

}

}

getch();

}