Answer:
The program to this question as follows:
Program:
#include <iostream> //defining header file
using namespace std;
int main() //defining main method
{
int n; //defining integer variables
cout<<"Enter number: "; //message
cin>>n; //input value by user
while (n< 100) //loop for check condition
{
cout<<n<<" ";//print value
n=n*2; //calculate value
}
return 0;
}
Output:
Enter number: 8
8 16 32 64
Explanation:
In the above C++ language code, a header file is included, then defining the main method, inside the method an integer variable n is defined, which is used for user input for calculating their double number.
In the next step, The while loop is declared, and the loop variable n range is defined, that its value is less than 100, inside the loop the variable n is used to calculate, its double number, and print function "cout" to print its value.
