# include <stdio.h>

//
//  Program 6.8a, Stephen Kochan, Programming in C.
//

int main ( void )
{
  float value1, value2;
  char operator;

  printf ( "Type in a simple expression NUMBER OPERATOR NUMBER: \n" );
  scanf ( "%f %c %f", &value1, &operator, &value2 );

  if ( operator == '+' )
  {
    printf ( "%g + %g = %g\n", value1, value2, value1 + value2 );
  }
  else if ( operator == '-' )
  {
    printf ( "%g - %g = %g\n", value1, value2, value1 - value2 );
  }
  else if ( operator == '*' )
  {
    printf ( "%g * %g = %g\n", value1, value2, value1 * value2 );
  }
  else if ( operator == '/' )
  {
    if ( value2 == 0 )
    {
      printf ( "%g / %g is not defined!\n", value1, value2 );
    }
    else
    {
      printf ( "%g / %g = %g\n", value1, value2, value1 / value2 );
    }
  }
  else
  {
    printf ( "The operator \"%c\" was not recognized!\n", operator );
  }

  return 0;
}