Linear Interpolation C code for X and Y axis - compile errors

[S_M_A]

int GefMain  (T_WORD *Y0,       /* Input Param 1  */
             T_WORD  *Y1,      /* Input Param 2  */
             T_WORD  *Y2,      /* Input Param 3  */
             T_WORD  *X0,      /* Input Param 4  */
             T_WORD  *X1,      /* Input Param 5  */
             T_WORD  *X2,      /* Input Param 6  */
             T_WORD  *Z1);      /* Output Param 7 */

You also have to implement it if you intend to use it (otherwise just remove it)

Pay some attention to how you format the code, spaces and aligned {} improve the readability a lot.

Goto isn't exactly the first thing you should think on using but anyway here are some more compilation issues:

- The label has to be set after the variables.
- Neither cin/cout nor << exists in plain C.
- SPD isn't declared
- Neither X or Y are initialized before being used