1. Calculadora en la programación en GAMBAS
PUBLIC CAN AS Integer
PUBLIC OPE1 AS Single
PUBLIC OPE2 AS Single
PUBLIC SUB Button17_Click()
TextBox1.Clear()
END
PUBLIC SUB Button18_Click()
ME.Close(0)
END
PUBLIC SUB Button12_Click()
TextBox1.Text = TextBox1.Text & "0"
END

2. PUBLIC SUB Button13_Click()
TextBox1.Text = TextBox1.Text & "."
END
PUBLIC SUB Button7_Click()
TextBox1.Text = TextBox1.Text & "1"
END
PUBLIC SUB Button8_Click()
TextBox1.Text = TextBox1.Text & "2"
END
PUBLIC SUB Button9_Click()
TextBox1.Text = TextBox1.Text & "3"
END
PUBLIC SUB Button4_Click()
TextBox1.Text = TextBox1.Text & "4"
END
PUBLIC SUB Button5_Click()
TextBox1.Text = TextBox1.Text & "5"
END
PUBLIC SUB Button6_Click()
TextBox1.Text = TextBox1.Text & "6"
END
PUBLIC SUB Button1_Click()
TextBox1.Text = TextBox1.Text & "7"
END
PUBLIC SUB Button2_Click()
TextBox1.Text = TextBox1.Text & "8"

3. END
PUBLIC SUB Button3_Click()
TextBox1.Text = TextBox1.Text & "9"
END
PUBLIC SUB Button10_Click()
CAN = 4
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Clear
END
PUBLIC SUB Button15_Click()
CAN = 1
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Clear
END
PUBLIC SUB Button14_Click()
CAN = 2
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Clear
END
PUBLIC SUB Button11_Click()
CAN = 3

4. IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Clear
END
PUBLIC SUB Button16_Click()
IF TextBox1.Text <> 0 THEN
OPE2 = TextBox1.Text
ELSE
OPE2 = 0
ENDIF
TextBox1.Text = operacion(OPE1, OPE2, CAN)
END
PUBLIC FUNCTION operacion(v1 AS Float, v2 AS Float, opera AS Integer) AS Float
DIM re AS Float
DIM X, Y, Z, X1, Y1, Z1, X2, Y2, Z2, f, i AS Integer
DIM XX, MEA AS String
SELECT CASE opera
CASE 1
re = v1 + v2
CASE 2
re = v1 - v2
CASE 3
re = v1 * v2
CASE 4
re = v1 / v2
CASE 5
re = (v1 * v2) / 100
CASE 6
re = v1 ^ 2
Z2 = 1
CASE 7
re = v1 ^ 3
Z2 = 1
CASE 8
re = v1 ^ v2
Z2 = 1
CASE 9
re = 1 / v1

5. Z2 = 1
CASE 10
f=1
FOR i = 1 TO v1
f=f*i
NEXT
re = f
Z2 = 1
END SELECT
IF Z2 = 1 THEN
RETURN re
ELSE
RETURN Y1
ENDIF
END
PUBLIC SUB Button19_Click()
CAN = 5
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Clear
END
PUBLIC SUB Button20_Click()
CAN = 6
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Text = OPE1
END
PUBLIC SUB Button21_Click()
'numero binario
DIM valor, x1, x2, i AS Integer
DIM cadena, cadena2 AS String
valor = TextBox1.Text

6. WHILE valor > 0
x1 = valor MOD 2
x2 = Int(valor / 2)
cadena = cadena & Str(x1)
valor = x2
WEND
FOR i = Len(cadena) TO 1 STEP -1
cadena2 = cadena2 & (Mid(cadena, i, 1))
NEXT
TextBox1.Text = cadena2
END
PUBLIC SUB Button22_Click()
'Calculo a octal de un número decimal
DIM valor, x1, x2, i AS Integer
DIM cadena, cadena2 AS String
' IF visor.Text <> 0 THEN
valor = TextBox1.Text
WHILE valor > 0
x1 = valor MOD 8
x2 = Int(valor / 8)
cadena = cadena & Str(x1)
valor = x2
WEND
FOR i = Len(cadena) TO 1 STEP -1
cadena2 = cadena2 & (Mid(cadena, i, 1))
NEXT
TextBox1.Text = cadena2
END
PUBLIC SUB Button23_Click()
'Calculo a hexadecimal de un número decimal
DIM valor, x1, x2, i AS Integer
DIM cadena, cadena2 AS String
valor = TextBox1.Text
WHILE valor > 0
x1 = valor MOD 16
x2 = Int(valor / 16)
IF x1 = 10 THEN
cadena = cadena & "A"
ELSE
IF x1 = 11 THEN
cadena = cadena & "B"
ELSE
IF x1 = 12 THEN
cadena = cadena & "C"

7. ELSE
IF x1 = 13 THEN
cadena = cadena & "D"
ELSE
IF x1 = 14 THEN
cadena = cadena & "E"
ELSE
IF x1 = 15 THEN
cadena = cadena & "F"
ELSE
cadena = cadena & Str(x1)
ENDIF
ENDIF
ENDIF
ENDIF
ENDIF
ENDIF
valor = x2
WEND
FOR i = Len(cadena) TO 1 STEP -1
cadena2 = cadena2 & (Mid(cadena, i, 1))
NEXT
TextBox1.Text = cadena2
END
PUBLIC SUB Button24_Click()
CAN = 7
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Text = OPE1
END
PUBLIC SUB Button25_Click()
CAN = 8
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Text = OPE1
END

8. PUBLIC SUB Button28_Click()
DIM k AS Float
k = Rad(TextBox1.Text)
TextBox1.Text = Sin(k)
END
PUBLIC SUB Button29_Click()
DIM k AS Float
k = Rad(TextBox1.Text)
TextBox1.Text = Cos(k)
END
PUBLIC SUB Button30_Click()
DIM k AS Float
k = Rad(TextBox1.Text)
TextBox1.Text = Tan(k)
END
PUBLIC SUB Button26_Click()
CAN = 9
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Text = OPE2
END
PUBLIC SUB Button27_Click()
CAN = 10
IF TextBox1.Text <> 0 THEN
OPE1 = TextBox1.Text
ELSE
OPE1 = 0
ENDIF
TextBox1.Text = OPE2
END