Question

using namespace std ;

Write C++ code to do the followings:

1-Display the multiples of 3 backward from 33 to 3, inclusive.

2-Display the uppercase letters of the alphabet backward from Z to A.

3-Ask the user to enter letters and convert it to uppercase.

Answer 1

#include <bits/stdc++.h>
using namespace std;

int main(int argc, char const *argv[])
{
   cout<<"Multiples of 3 backward from 33 to 3, inclusive are:\n";

   for (int i = 33; i >= 3; --i)
   {
       if(i%3==0)
           cout<<i<<endl;
   }
   return 0;
}

===========================================

Output:

akshay@akshay-Inspiron-3537:~$ g++ three.cpp
akshay@akshay-Inspiron-3537:~$ ./a.out
Multiples of 3 backward from 33 to 3, inclusive are:
33
30
27
24
21
18
15
12
9
6
3

============================================================

#include <bits/stdc++.h>
using namespace std;

int main(int argc, char const *argv[])
{
   cout<<"Uppercase letters of the alphabet backward from Z to A\n";

   for (int i = 90; i >= 65; --i)
   {
      
           cout<<char(i)<<endl;
   }
   return 0;
}

============================================================

akshay@akshay-Inspiron-3537:~$ g++ three.cpp
akshay@akshay-Inspiron-3537:~$ ./a.out
Uppercase letters of the alphabet backward from Z to A
Z
Y
X
W
V
U
T
S
R
Q
P
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A

================================================================

#include <bits/stdc++.h>
using namespace std;

int main(int argc, char const *argv[])
{
   cout<<"Enter Letter\n";
   char ch;
   cin>>ch;

   if( ch >= 'a' && ch <= 'z')
ch = ch - ('a' - 'A');
cout<<"UpperCase is "<<ch;

  
      
          
  
   return 0;
}

==================================================================

akshay@akshay-Inspiron-3537:~$ g++ three.cpp
akshay@akshay-Inspiron-3537:~$ ./a.out
Enter Letter
a
UpperCase is A