User Registration and Login Using Functions and String Functions in C Programming

User Registration and Login Using Functions and String Functions in C Programming  

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#include<stdio.h>
#include<string.h>
void Reg();
void Login();
void Data();
char Fn[30],Ln[30],Ph[30],Loc[30],email[30],u1[30],p1[30],u2[20],p2[20];

void Reg()
{
printf("Enter 1st Name:");
scanf("%s",&Fn);
printf("Enter Last Name:");
scanf("%s",&Ln);
printf("Enter Phone:");
scanf("%s",&Ph);
printf("Enter Location:");
scanf("%s",&Loc);
printf("Enter Your email id:");
scanf("%s",&email);
printf("Create a user Name:");
scanf("%s",&u1);
printf("Create a password:");
scanf("%s",&p1);
system("cls");
printf("Registration success");
Sleep(500);
system("cls");

Login();

if(strcmp(u1,u2)==0&&strcmp(p1,p2)==0)
{
Data();
}
else
{
printf("Invalid username/password");
}

}

void Login()
{
printf("Enter your Username:");
scanf("%s",&u2);
printf("Enter your password:");
scanf("%s",&p2);
}

void Data()
{
printf("Hai %s\n",Fn);
printf("your profile is:\n");
strcat(Fn," ");
printf("your full name is:%s\n",strcat(Fn,Ln));
printf("Location:%s\n",Loc);
printf("Email id:%s\n",email);
printf("Phone number is:%s\n",Ph);
}
main()
{
Reg();
}