| 1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)getcodi.c 4.2 (Berkeley) %G%"; |
| 3 | #endif not lint |
| 4 | |
| 5 | # include "getpar.h" |
| 6 | |
| 7 | /* |
| 8 | ** get course and distance |
| 9 | ** |
| 10 | ** The user is asked for a course and distance. This is used by |
| 11 | ** move, impulse, and some of the computer functions. |
| 12 | ** |
| 13 | ** The return value is zero for success, one for an invalid input |
| 14 | ** (meaning to drop the request). |
| 15 | */ |
| 16 | |
| 17 | getcodi(co, di) |
| 18 | int *co; |
| 19 | double *di; |
| 20 | { |
| 21 | |
| 22 | *co = getintpar("Course"); |
| 23 | |
| 24 | /* course must be in the interval [0, 360] */ |
| 25 | if (*co < 0 || *co > 360) |
| 26 | return (1); |
| 27 | *di = getfltpar("Distance"); |
| 28 | |
| 29 | /* distance must be in the interval [0, 15] */ |
| 30 | if (*di <= 0.0 || *di > 15.0) |
| 31 | return (1); |
| 32 | |
| 33 | /* good return */ |
| 34 | return (0); |
| 35 | } |