Question

Write a code segment that prompts the user to enter a double number between (5.55 and 123.3) inclusive.

If the input is invalid, print an error message and loop until the input is valid.

Code in c++

Answer 1

#include <iostream>
using namespace std;

int main(void) {
   double d;
   double min = 5.55;
   double max = 123.3;
   do{
      cout<<"Enter a double: ";
      cin>>d;       
      if(!(d >= min && d <= max)){
         cout<<"Invalid number. Please enter again: "<<endl;
      }
   }while(!(d >= min && d <= max));      

   cout<<"Number is "<<d<<endl;
   return 0;
}

Enter a double 1.23 Invalid numbe. Please enter again: Enter a double: 2.34 nvaiid number. Piease enter again: Enter a double 4.56 nvalid number Please enter again: Enter a double 5.67 Number is 5.67 rocess exited after 5.508 seconds with return value Press any key to continue . - .