Question

   use C++ language

1. Create a random number between 1 and 100
2. Ask the user for their age. Use a while loop to ensure they give you a number between 20 and 50
3. Give the user five chances to guess the secret password "PASSWORD". If they don't guess it, tell them they do not have access.

Answer 1

#include <iostream>
#include <string>
#include <ctime>
#include <stdio.h>      
#include <stdlib.h> 
using namespace std;

int main(){
   srand((unsigned)time(NULL));
   int r = 1 + (rand() % 100);
   cout<<"Random number = "<<r<<endl;
   
   int age;
   cout<<"\nEnter age: ";
   cin>>age;
   
   while(age<20 || age>50){
       cout<<"Invalid age.. Enter age again: ";
       cin>>age;
   }
   cout<<"Valid age: "<<age<<"\n"<<endl;
   
   string pass;
   cout<<"Enter password: ";
   cin>>pass;
   int i;
   for(i = 0;pass!="PASSWORD" && i<5;i++){
       cout<<"Wrong password.. Enter password again: ";
       cin>>pass;
   }
   if(i==5){
       cout<<"You have no access"<<endl;
   }
   else{
       cout<<"You have access"<<endl;
   }
   return 0;
}