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来源：5-8 编程练习

陈立天

2019-12-22 15:47:00

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>算数运算</title>
</head>
<body>
    <script>
    var a=4,
    b=5,
    one=a+b,
    two=a-c,
    three=a*c,
    four=a/c,
    five=a%c;
    
    document.write(one)
    document.write(two)
    document.write(three)
    document.write(four)
    
//代码补充
</script>
</body>
</html>

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