the initial values of IX,
<HTML>
<!- Author: Pavel Khramtsov
Date: February 23, 1996
URL: http://144.206.192.100/radleg/ mo_input.htm
->
<HEAD>
<TITLE>Проверка устного
счета.</TITLE>
<SCRIPT LANGUGE="JavaScript">
<!-
var max_value = 0; var operand1 = 0
var operand2 = 0; var result = 0
var flag = 0; var sign = "+"
var input = ""; var v_date = new Date()
var number = v_date.getTime()
function init(factor){
var today = new Date()
return (factor*today.getTime()
/1000)%30000
}
//Инициализировать датчик
//случайных чисел
IX = init(2); IY = init(3); IZ = init(4)
//2, 3, and 4 below were arbitrarily cho-
//sen. They put some distance between
// the initial values of IX, IY, and IZ
//Датчик случайных чисел.
function random(){
IX = Math.floor(171 * IX % 30269)
IY = Math.floor(172 * IY % 30307)
IZ = Math.floor(170 * IZ % 30323)
return ( IX/30269.0 + IY/30307.0
+ IZ/30323.0 ) % 1.0 }
//Выбрать сложение или вычитание
function set_sign(x){
if( x == "+"){
flag = 0; sign = "+"
}
if( x == "-"){
flag = 1; sign = "-"
}
return true
}
// Определить первый операнд
function f_operand(){
operand1 = random()*max_value
return parseInt(operand1)
}
// Определить второй операнд
function s_operand(){
if(flag == 0){
operand2 = random()*
(max_value-operand1)
}
else {
operand2 = random()*
operand1
}
return parseInt(operand2)
}
// Проверить введенные данные
function input_sign(x){
if(x == 10){
if(flag == 0){
if(operand1+operand2 ==
parseInt(input)){
window.document.test. r0.value = "Молодец!"
}
else {
window.document.test.r0.value = "Думай!?"
window.document.test.input = ""; input = ""
}
}
if(flag == 1){
if(operand1-operand2 ==
parseInt(input)){
window.document.test.r0.value ="Lі-іі-ір!"
}
else{
window.document.test.r0.value = "Думай!?" window.document.test.input = ""; input = ""
}
}
return true
}
input += x
window.document.test.result.value = input
return true
}
// Генерация варианта
function main_calc(){
operand1 = f_operand()
window.document.test.op1.value = operand1
operand2 = s_operand()
window.document.test.op2.value = operand2
window.document.test.s_sign.value = sign
input = ""; window.document.test.input = ""
window.document.test.r0.value = " ???"
return true
}
// ->
</SCRIPT>
</HEAD>
<BODY>
<CENTER>
<H1>Математический тест</H1>
<HR>
<FORM NAME=test>
<table>
<TR>
<TD><INPUT NAME=i10 TYPE=button VALUE="0-10" onClick="max_value=10"></TD>
<TD><INPUT NAME=i20 TYPE=button VALUE="0-20" onClick="max_value=20"></TD>
<TD><INPUT NAME=i100 TYPE=button VALUE="0-100" onClick="max_value=100"></TD>
<TD><INPUT NAME=i+ TYPE=button VALUE="+" onClick="set_sign("+")"></TD>
<TD><INPUT NAME=i- TYPE=button VALUE="-" onClick="set_sign("-")"></TD>
</TR>
</TABLE>
<HR>
<table>
<TR>
<TD><INPUT NAME=op1 SIZE=2 MAXLENGTH=2></TD>
<TD><INPUT NAME=s_sign SIZE=1 MAXLENGTH=1></TD>
<TD><INPUT NAME=op2 SIZE=2 MAXLENGTH=2></TD>
<TD>=</TD>
<TD><INPUT NAME=result SIZE=3 MAXLENGTH=3></TD>
<TD><INPUT NAME=award TYPE=button VALUE="?" onClick="main_calc()">
<TD><INPUT NAME=r0 VALUE="???">
</TR>
</TABLE>
<HR>
<TABLE BORDER=2>
<TR>
<TD><INPUT NAME=b1 TYPE=button VALUE="1" onClick="input_sign("1")"></TD>
<TD><INPUT NAME=b2 TYPE=button VALUE="2" onClick="input_sign("2")"></TD>
<TD><INPUT NAME=b3 TYPE=button VALUE="3" onClick="input_sign("3")"></TD>
</TR>
<TR>
<TD><INPUT NAME=b4 TYPE=button VALUE="4" onClick="input_sign("4")"></TD>
<TD><INPUT NAME=b5 TYPE=button VALUE="5" onClick="input_sign("5")"></TD>
<TD><INPUT NAME=b6 TYPE=button VALUE="6" onClick="input_sign("6")"></TD>
</TR>
<TR>
<TD><INPUT NAME=b7 TYPE=button VALUE="7" onClick="nput_sign("7")"></TD>
<TD><INPUT NAME=b8 TYPE=button VALUE="8" onClick="input_sign("8")"></TD>
<TD><INPUT NAME=b9 TYPE=button VALUE="9" onClick="input_sign("9")"></TD>
</TR>
<TR>
<TD><INPUT NAME=b0 TYPE=button VALUE="0" onClick="input_sign("0")"></TD>
<TD COLSPAN=2><INPUT NAME=bs TYPE=button VALUE="OK" onClick="input_sign("10")"></TD>
</TR>
</TABLE>
</FORM>
</CENTER>
<HR>
</BODY>
</HTML>
