// A simple example of how problems can arise when 
// we perform operations such as division on integers,
// and we want these operations to produce real numbers
// as results. In C, operations on integers produce
// integer results.
//
// refer to division_incorrect1.cpp and division_incorrect2.cpp
// for incorrect versions.

#include <stdio.h>

int main()
{
  int a, b;
  printf("enter a and b\n");
  scanf("%d %d", &a, &b);

  double a2 = (double) a;
  double b2 = (double) b;

  // This is an operation of doubles, and the result is stored 
  // in a double.
  // Even if the division result is not an integer, 
  // c will still hold the true division result.
  double c = a2 / b2;

  // this prints out the incorrect result
  printf("c = %lf\n", c);
}