loops: countdown until matching digits

[seaminusminus]

Goal:
Write a program that takes in an integer in the range 11-100 as input. The output is a countdown starting from the integer, and stopping when both output digits are identical. Note: End with a newline.

For coding simplicity, follow each output number by a space, even the last one.

Use a while loop. Compare the digits; do not write a large if-else for all possible same-digit numbers.

If the input is:
93

Output is:
93 92 91 90 89 88

current code output:
93

#include <iostream>
using namespace std;

int main() {
int input;
int left;
int right;
int sameDigit;

cin >> input;
   if ((input < 11) && (input > 100)){
   cout << "Input must be 11-100";
   }
   else {
      right = input%10;
      left = input/10;
      
      sameDigit = (left == right);
      
      while (sameDigit == true){
         cout << input << " ";
      }
      if (sameDigit == false){
      cout << input << " ";
      input = input - 1;
      }

   } 
   
cout << endl;
   return 0;
}

[thmm]

if ((input < 11) && (input > 100)

How can a number be < 11 and > 100 at the same time ?

[seeplus]

#include <iostream>

int main() {
    int input {};

    std::cin >> input;
    if ((input < 11) || (input > 100))
        return (std::cout << "Input must be 11-100\n"), 1;

    for (; (input % 10) != (input / 10); --input)
        std::cout << input << ' ';

    std::cout << input << '\n';
}

[seaminusminus]

thanks @thmm !! I think that was one of my main issues!!
----
Here's the fixed program:

#include <iostream>
using namespace std;

int main() {
int input;
int left;
int right;
int sameDigit = false;

   cin >> input;
   
   while ((input >= 11) && (input <= 100))
   {
      right = input%10;
      left = input/10;
      
      if (left == right){
         sameDigit = true;
       }
      
            if (sameDigit == false){
                   cout << input << " ";
                   input = input - 1;
                   cin >> input; 
             }
         
             if (sameDigit == true){
                    cout << input << " ";
                    break;
             }
   } 
   
   if ((input < 11) || (input > 100))
   {
      cout << "Input must be 11-100";
   }

cout << endl;
   return 0;
}