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PURPOSE:  To find the area of multiple trapezoids given the lengths

          of the parallel sides and the height of each

 

INPUT:  Multiple sets of 3 numbers at a time (on a line).

        Numbers represent the lengths of the 2 parallel sides of a

          trapezoid and its height

        Zeroes will signal end of data

 

OUTPUT:  Labeled information about each trapezoid:  base1,  base2,  height,

         area

 

 

MODIFICATIONS: changed the type of the variables from integer to float

 

GENERAL COMMENTS ABOUT THE PROGRAM OR THE LANGUAGE: 

Numbers are assumed to be positive

      No error checking is performed

      This program uses the fixed column format required by early FORTRAN