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Use do while loop to read a number

#include <iostream>  using namespace std;    int main()  {    int num;      do {      cout << "Enter a number (100 to stop): ";      cin >> num;    } while(num != 100);      return 0;  } Enter a number (100 to stop): 1 Enter a number (100 to stop): 2 Enter a number (100 to stop): 3 Enter a number (100 to stop): 100