Question

Write a program to prompt the user to display the following menu:

Guess-Number                        Concat-names             Quit

• If the user selects Guess-number, your program needs to call a user-defined function called int guess-number ( ). Use random number generator to generate a number between 1 – 100. Prompt the user to guess the generated number and print the following messages. Print the guessed number in main ():

Guess a number: 76

96:

Too large

10

Too small

70

Close

Do you want to quit? Q

• If the user selects Concat-name, prompt the user how many names to concatenate and then enter all the first and las names and store then into a two one-dimensional array. Your program needs to call a user-defined function called void sort-name ( char [] , char[]) to concatenate the first name and the last name and print the names in this function.

How many names: 3

First name                   last name                                Combined

Sue                              Smith                                       Sue Smith

Alan                             Davidson                                 Alan Davidson

David                           Lee                                          David Lee

Do you want to quit? Q

C++

Answer 1

Code:

#include<iostream>
#include<random>
#include<ctime>
#include<iomanip>
using namespace std;
void guess_number()
{
   srand(time(0));
char choice;
do
{
int guess=0;
int num=rand()%(100)+1;/*Generating a random number*/
cout<<"Guess the number:";
while(guess!=num)
{
cin>>guess;/*Reading user input*/
if(guess>num)
{/*if guess is greater than random number*/
cout<<"Too Large"<<endl;
}
else if(guess<num)
{/*if guess is less than random number*/
cout<<"Too Small"<<endl;
}
else
{/*if boath are equal*/
cout<<"Close"<<endl;
}
}
cout<<"Do you want to quit?";
cin>>choice;/*users choice*/
  
}while(choice!='Q');
  
}
void sort_name(char first[],char last[])
{/*Here we print the concatinated name*/
   int i=0;
   while(first[i]!='\0')
   {/*Here we print the first name*/
       cout<<first[i];
       i++;
   }
   i=0;
   cout<<" ";
   while(last[i]!='\0')
   {/*Here we print the last name*/
       cout<<last[i];
       i++;
   }
   cout<<""<<endl;
}
int main()
{
   while(true)
   {
       cout<<"1. Guess_Number"<<endl;
        cout<<"2.Concat-names"<<endl;
        cout<<"3.Quit"<<endl;/*Priting the menu*/
        int choose;
        cout<<"Enter your choice:";
        cin>>choose;/*Reading users choice*/
        switch(choose)
        {
            case 1:/*if 1*/
           guess_number();
           break;
           case 2:/*if 2*/
           char choice;
               do
               {
                   char first[50];
                   char last[50];
                   int n,i;/*Decalring variables*/
                   cout<<"How many names :";
                   cin>>n;/*Reading no of names*/
                   cout<<"First name";
                   cout<<setw(20)<<"Last Name";
                   cout<<setw(20)<<"combined"<<endl;
                   for(i=0;i<n;i++)
                   {/*This loop reads n names*/
                       cin>>first;
                       cin>>last;
                       cout<<setw(43);
                       sort_name(first,last);
                      
                   }
                   cout<<"Do you want to quit?";
           cin>>choice;/*users choice*/
                          
               }while(choice!='Q');  
               break;
              
           case 3:/*if 3*/
               exit(0);
               break;
           default:
               cout<<"invlaid input"<<endl;
       }
      
       
   }

}

Output:

Indentation: