def play (prog): h4 H04) out = h4.exec(prog) print(f' {prog} - ---- {out}------ ') play('print 45') play(';;;; print 3; ; ; print 5;) play('print 1 + 2 + 3') play('alpha = 1; beta = 2; gamma - alpha + beta;') play('alpha = 1; beta = 2; print alpha; gamma = alpha + beta; ') play("x = 1; print x') play('x = 15; print x + 30') play('x = 15; X = 40; print x + 100) play('x = 10; y = x + 40; print x + y ) play('hello - 123; world - 7000; print hello + world') play('apple 3; orange = 4; print apple; cherry - apple + orange + apple; print cherry') play('a = 1; print a; b = 2; print b; print a + b;') play('x = 4; x = x + 3; y = x + x + x; print y; print x;') play('x = 4; if x > 7 then x = 500; print x') play("* = 4; if x > 2 then x = 500; print x') # the following should returns ERROR play('print x') play('x = 4; x = 2 + y;') play('if x = 4 then print 5') play('x = 3 . 5; print x')