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tonyh發表於 2013-4-20 16:08 | 只看該作者

printf() 函式

本帖最後由 tonyh 於 2013-4-20 16:35 編輯

利用 printf() 函式, 規範輸出字串的格式.

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n"; // %d 輸出整數 %n 換行
String b="There are %f cats and %.2f dogs.%n"; //%f 輸出浮點數 .2 四捨五入至小數後第二位
String c="There are %s cats, %d dogs, %s pigs, and %d rabbits.%n"; //%s 字串
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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7^#

蔡昀佑發表於 2013-4-20 16:47 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats, %d dogs, %s pigs, and %d rabbits.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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6^#

尤泓鈞發表於 2013-4-20 16:47 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats, %d dogs, %s pigs, and %d rabbits.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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5^#

t3742238發表於 2013-4-20 16:45 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats, %d dogs, %s pigs, and %d rabbits.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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4^#

黃博鴻發表於 2013-4-20 16:44 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats and %d dogs,%s pigs,and %d rabbits.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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3^#

t2364705發表於 2013-4-20 16:44 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats, %d dogs, %s pig, and %d ribbit.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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2^#

劉漢文發表於 2013-4-20 16:43 | 只看該作者

public class ch63
{
public static void main(String args[])
{
String a="There are %d cats and %d dogs.%n";
String b="There are %f cats and %.2f dogs.%n";
String c="There are %s cats, %d dogs, %s pigs, and %d rabbits.%n";
System.out.printf(a,5,7);
System.out.printf(b,5.0,7.0);
System.out.printf(c,"5",7,"2",3);
}
}

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