/* ECP: FILEname=fig3_29.c */
/* 1*/   #include <stdio.h>

/* 2*/   #define Pi 3.1416
/* 3*/   #define Circle 1
/* 4*/   #define Rectangle 2
/* 5*/   #define Square 3

/* 6*/   main( void )
/* 7*/   {
/* 8*/       int Choice;
/* 9*/       double Dim1, Dim2;

/*10*/       while( 1 )
/*11*/       {
/*12*/           printf( "Enter %d for circle, ", Circle );
/*13*/           printf( "Enter %d for rectangle, ", Rectangle );
/*14*/           printf( "Enter %d for square: ", Square );

/*15*/           if( scanf( "%d", &Choice ) != 1 )
/*16*/               break;

/*17*/           if( Choice == Circle )
/*18*/           {
/*19*/               printf( "Enter radius: " );
/*20*/               if( scanf( "%lf", &Dim1 ) != 1 )
/*21*/                   break;
/*22*/               printf( "Shape is circle radius %.2f; ", Dim1 );
/*23*/               printf( "the area is %.2f\n", Dim1 * Dim1 * Pi );
/*24*/           }
/*25*/           else if( Choice == Square )
/*26*/           {
/*27*/               printf( "Enter side: " );
/*28*/               if( scanf( "%lf", &Dim1 ) != 1 )
/*29*/                   break;
/*30*/               printf( "Shape is square side %.2f; ", Dim1 );
/*31*/               printf( "the area is %.2f\n", Dim1 * Dim1 );
/*32*/           }
/*33*/           else if( Choice == Rectangle )
/*34*/           {
/*35*/               printf( "Enter length and width: " );
/*36*/               if( scanf( "%lf %lf", &Dim1, &Dim2 ) != 2 )
/*37*/                   break;
/*38*/               printf( "Shape is rectangle " );
/*39*/               printf( "length %.2f width %.2f; ", Dim1, Dim2 );
/*40*/               printf( "the area is %.2f\n", Dim1 * Dim2 );
/*41*/           }
/*42*/           else      /* Illegal Choice */
/*43*/               break;
/*44*/       }
/*45*/   }