1st program with problems "Euler Method"

[roadrunner]

For the first three lines of your program, I think this is what you want:

Code:

EXPORT eulerm(funct,X0,Y0,ch,times)
BEGIN
 LOCAL a, s,check,x,y;
 CAS(EVAL("myfunct(x,y):="+funct));
 RETURN(myfunct('x','y'));
END;

With those changes,

eulerm("(3-y)*(y+1)",0,4,1,5) will return (y+1)*(-y+3)

Nothing after the return statement will be executed.

-road