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다각형 넓이 #29

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Merged
crongro merged 7 commits into from
Sep 13, 2018
Merged

다각형 넓이 #29

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3e7f64e
index of polygonSize
HTMLhead Sep 11, 2018
b3d7353
Full index of html and get area of circle, square, trapezoid, cylinder
HTMLhead Sep 12, 2018
a7c4036
restart
HTMLhead Sep 12, 2018
176f5a0
add sizeCircle function
HTMLhead Sep 12, 2018
c7ce1b8
add function sizeSquare, add testcode
HTMLhead Sep 13, 2018
a11e2e1
add function sizeTrapezoid, add test code
HTMLhead Sep 13, 2018
0891c18
add function sizeSylinder, add distinguish test code, add test code
HTMLhead Sep 13, 2018
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16 changes: 16 additions & 0 deletions polygonSize.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>polygon</title>
</head>

<body>
<h2>다각형의 넓이 구하기</h2>
<script src = 'polygonSize.js'></script>
</body>

</html>
67 changes: 67 additions & 0 deletions polygonSize.js
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function sizeCircle(radius) {
if (toString.call(radius) != '[object Number]') {
return console.log('숫자만 계산 가능합니다.');
}
const circleArea = radius * radius * Math.PI
console.log('반지름이 ' + radius + '인 원의넓이는' + circleArea + '입니다.');
}
//test circle
console.log('원')
sizeCircle(4)
sizeCircle('문자')
sizeCircle();

function sizeSquare(lowerSide, height) {
if (lowerSide === undefined || height === undefined) {
return console.log('인자가 부족합니다.')
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@crongro crongro Sep 13, 2018

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인자의 갯수를 확인하는 것이면,
arguments 갯수를 확인할 수도 있겠네요.

} else if (toString.call(lowerSide) != '[object Number]' || toString.call(height) != '[object Number]') {
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@crongro crongro Sep 13, 2018

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else if(여기)
여기에 해당하는 부분을 별도 함수로 한번 만들어볼래요?
여기에 해당하는 코드와 로직이 길면 이를 하위함수로 많이 분리하기도해요.

return console.log('숫자만 계산 가능합니다.')
}
const squareArea = lowerSide * height
console.log('밑변과 높이가 ' + lowerSide + ', ' + height + '인 사각형의 넓이는' + squareArea + '입니다.')
}

//test square
console.log('사각형')
sizeSquare(4, 3)
sizeSquare(3)
sizeSquare()
sizeSquare('문자', '문자');
sizeSquare('문자');

function sizeTrapezoid(topSide, lowerSide, height) {
if (topSide === undefined || lowerSide === undefined || height === undefined) {
return console.log('인자가 부족합니다.')
} else if (toString.call(topSide) != '[object Number]' || toString.call(lowerSide) != '[object Number]' || toString.call(height) != '[object Number]') {
return console.log('숫자만 계산할 수 있습니다.')
}
const trapezoidArea = (topSide + lowerSide) * height / 2
console.log('윗변과 아랫변과 높이가 ' + topSide + ', ' + lowerSide + ', ' + height + '인 사다리꼴의 넓이는' + trapezoidArea + '입니다.')
}

//test trapezoid
console.log('사다리꼴')
sizeTrapezoid(2, 3, 4)
sizeTrapezoid(2, 3)
sizeTrapezoid('문자', 2, 3)
sizeTrapezoid('문자', '문자', '문자')
sizeTrapezoid()

function sizeSylinder(radius, height) {
if (radius === undefined || height === undefined) {
return console.log('인자가 부족합니다.')
} else if (toString.call(radius) != '[object Number]' || toString.call(height) != '[object Number]') {
return console.log('숫자만 계산할 수 있습니다.')
}
const sylinderArea = (Math.PI * radius * radius) + ((2 * radius * Math.PI) * height)
console.log('반지름과 높이가' + radius + ', ' + height + '인 원기둥의 겉넓이는 ' + sylinderArea + '입니다.')
}

//test sizeSylinder
console.log('원기둥')
sizeSylinder(2, 3)
sizeSylinder(2)
sizeSylinder('문자')
sizeSylinder('문자', 3)
sizeSylinder()