package homework2;
public class Test1 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
double r = 1;
double s;
s = 3.14 * r * r;
System.out.println(s);
}
}
package homework2;
public class Test2 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
float hua = 50, a;
a = (hua - 32) * 5 / 9;
System.out.println("华氏温度转摄氏温度为" + a);
float she = 30, b;
b = she * 9 / 5 + 32;
System.out.println("摄氏温度转华氏温度为" + b);
}
}
package homework2;
public class Test3 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int a = 5, b = 8, c;
c = a;
a = b;
b = c;
System.out.println(a);
System.out.println(b);
}
}
package homework2;
public class Test4 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int a = 12345;
int b;
b = a / 100 * 100;
System.out.println(b);
}
}
package homework2;
public class Test5 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int a = 345;
int ge, shi, bai, sum;
ge = a % 10;
shi = a / 10 % 10;
bai = a / 100;
sum = ge + shi + bai;
System.out.println("各位数的和为" + sum);
}
}
package homework2;
public class Test6 {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
char a = 'T';
System.out.println((char) (a + 32));
char b = 'm';
System.out.println((char) (b - 32));
}
}
