Calculation by double variables : double « Data Types « C++ Tutorial

1. C++ Tutorial
2. Data Types
3. double

#include <iostream> 
using namespace std; 
 
int main() {    
  double distance; 
  double lightspeed; 
  double delay; 
  double delay_in_min; 
 
  distance = 34000000.0; // 34,000,000 miles 
  lightspeed = 186000.0; // 186,000 per second 
 
  delay = distance / lightspeed;     
 
  cout <<  "Time delay when talking to Mars: " << 
           delay << " seconds.\n"; 
     
  delay_in_min = delay / 60.0; 
 
  cout <<  "This is " << delay_in_min << " minutes."; 
 
  return 0; 
}

Time delay when talking to Mars: 182.796 seconds.
This is 3.04659 minutes."