10. 계산기 만들기
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작성자 관리자 댓글 0건 조회 287회 작성일 22-09-23 10:47본문
10. 계산기 만들기
1. 실습1
파일명 form.php
<?
include "../header.php";
?>
<h1>계산기</h1>
<h3>학번 : 이름 : </h3>
<form method="post" action="result.php">
<table width=600 border=1>
<tr height=40 align=center>
<td width=200>숫자1</td>
<td width=200>연산자</td>
<td width=200>숫자2</td>
</tr>
<tr height=40 align=center>
<td><input type="text" name="num1" ></td>
<td><input type="text" name="opcode" ></td>
<td><input type="text" name="num2" ></td>
</tr>
<tr height=40 align=center>
<td colspan=3><input type="submit" value="확인"></td>
</tr>
</table>
</form>
<?
include "../footer.php";
?>
파일명 : result.php
<?
include "../header.php";
?>
<h1>계산기1</h1>
<h3>학번 : 이름 : </h3>
<?
$num1 = $_POST['num1'];
$opcode = $_POST['opcode'];
$num2 = $_POST['num2'];
if($opcode == "+") {
$result = $num1 + $num2;
} else if($opcode == "-") {
$result = $num1 - $num2;
} else if($opcode == "*") {
$result = $num1 * $num2;
} else if($opcode == "/") {
$result = $num1 / $num2;
} else {
$result = "error";
}
if($reuslt == "error") {
echo "<p>".$result."</p>";
} else {
echo "<p>".$num1 .$opcode. $num2."=".$result."</p>";
}
?>
<?
include "../footer.php";
?>
2. 실습 2
파일명 : form1.php
<?
include "../header.php";
$num1 = $_POST['num1'];
$opcode = $_POST['opcode'];
$num2 = $_POST['num2'];
?>
<h1>계산기</h1>
<h3>학번 : 이름 : </h3>
<form method="post" action="form1.php">
<table width=600 border=1>
<tr height=40 align=center>
<td width=200>숫자1</td>
<td width=200>연산자</td>
<td width=200>숫자2</td>
</tr>
<tr height=40 align=center>
<td><input type="text" name="num1" ></td>
<td><input type="text" name="opcode" ></td>
<td><input type="text" name="num2" ></td>
</tr>
<tr height=40 align=center>
<td colspan=3><input type="submit" value="확인"></td>
</tr>
</table>
</form>
<?
if($opcode != ""){
?>
<table width=600 border=1>
<tr height=50 align=center>
<td>
<?
if($opcode == "+") {
$result = $num1 + $num2;
} else if($opcode == "-") {
$result = $num1 - $num2;
} else if($opcode == "*") {
$result = $num1 * $num2;
} else if($opcode == "/") {
$result = $num1 / $num2;
} else {
$result = "error";
}
if($reuslt == "error") {
echo "<p>".$result."</p>";
} else {
echo "<p>".$num1 .$opcode. $num2."=".$result."</p>";
}
?>
</td>
</tr>
</table>
<?
}
?>
<?
include "../footer.php";
?>
3. 실습 3
파일명 : form3.php
<?
include "../header.php";
?>
<h1>계산기</h1>
<h3>학번 : 이름 : </h3>
<form method="post" action="result3.php" target="result_window">
<table width=600 border=1>
<tr height=40 align=center>
<td width=200>숫자1</td>
<td width=200>연산자</td>
<td width=200>숫자2</td>
</tr>
<tr height=40 align=center>
<td><input type="text" name="num1" ></td>
<td><input type="text" name="opcode" ></td>
<td><input type="text" name="num2" ></td>
</tr>
<tr height=40 align=center>
<td colspan=3><input type="submit" value="확인"></td>
</tr>
</table>
</form>
<table width=600 border=1>
<tr>
<td><iframe name="result_window" src="" width=100% height=100 border=1></iframe></td>
</tr>
</table>
<?
include "../footer.php";
?>
파일명 : result3.php
<?
$num1 = $_POST['num1'];
$opcode = $_POST['opcode'];
$num2 = $_POST['num2'];
if($opcode == "+") {
$result = $num1 + $num2;
} else if($opcode == "-") {
$result = $num1 - $num2;
} else if($opcode == "*") {
$result = $num1 * $num2;
} else if($opcode == "/") {
$result = $num1 / $num2;
} else {
$result = "error";
}
if($reuslt == "error") {
echo "<p>".$result."</p>";
} else {
echo "<p>".$num1 .$opcode. $num2."=".$result."</p>";
}
?>
4. 실습4
파일명 : form2.php
<?
include "../header.php";
?>
<h1>계산기2</h1>
<h3>학번 : 이름 : </h3>
<script>
function calc() {
f = document.form1;
var num1 = parseInt(f.num1.value);
var opcode = f.opcode.value;
var num2 = parseInt(f.num2.value);
//alert(num1);
var result = 0;
if(opcode == "+") result = num1 + num2;
else if(opcode == "-") result = num1 - num2;
else if(opcode == "*") result = num1 * num2;
else if(opcode == "/") result = num1 / num2;
result_div = document.getElementById("result");
result_div.innerHTML = result;
}
</script>
<form name="form1" method="post" action="">
<table width=600 border=1>
<tr height=40 align=center>
<td width=200>숫자1</td>
<td width=200>연산자</td>
<td width=200>숫자2</td>
</tr>
<tr height=40 align=center>
<td><input type="text" name="num1" ></td>
<td><input type="text" name="opcode" ></td>
<td><input type="text" name="num2" ></td>
</tr>
<tr height=40 align=center>
<td colspan=3><input type="submit" value="확인" onclick="calc();return false"></td>
</tr>
</table>
</form>
<table width=600 border=1>
<tr height=40 align=center>
<td>
<div id="result" class="">
결과
</div>
</td>
</tr>
</table>
<?
include "../footer.php";
?>
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