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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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/* OLDSTYLE.C: Old-style function. */
#include <stdio.h>
#define PI 3.14
 
float sphere();
 
main()
{
   float volume;
   int radius = 3;
   volume = sphere( radius );
   printf( "Volume: %f\n", volume );
}
 
float sphere( rad )
int rad;
{
   float result;
   result = rad * rad * rad;
   result = 4 * PI * result;
   result = result / 3;
   return result;
}