Java复数的四则运算

import java.util.Scanner;

 

import com.sun.jndi.url.iiopname.iiopnameURLContextFactory;

 

public class a123 {

public static void judge(int True,int Fake){

if (True == 0) {

if (Fake == 1)

System.out.printf("i\n\n");

else if (Fake == 0)

System.out.printf("0\n\n");

else if (Fake == -1)

System.out.println("-i\n\n");

else

System.out.printf("%di\n\n", Fake);

} else if (Fake == 1)

System.out.printf("%d+i\n\n", True);

else if (Fake == 0)

System.out.printf("%d\n\n", True);

else if (Fake == -1)

System.out.printf("%d-i\n\n", True);

else if (Fake > 0)

System.out.printf("%d+%di\n\n", True, Fake);

else if (Fake < 0)

System.out.printf("%d%di\n\n", True, Fake);

}

public static void main(String args[]) {

float true1;

float true2;

float fake1;

float fake2;

int logo;

int True = 0, Fake = 0;

Scanner in = new Scanner(System.in);

while (in.hasNext()) {

true1 = in.nextFloat();

fake1 = in.nextFloat();

true2 = in.nextFloat();

fake2 = in.nextFloat();

logo = in.nextInt();

if (logo == 0) {

True = (int) (true1 + true2);

Fake = (int) (fake1 + fake2);

} else if (logo == 1) {

True = (int) (true1 - true2);

Fake = (int) (fake1 - fake2);

} else if (logo == 2) {

True = (int) (true1 * true2 - fake1 * fake2);

Fake = (int) (true1 * fake2 + fake1 * true2);

} else if (logo == 3) {

True = (int) ((true1 * true2 + fake1 * fake2) / (true2 * true2 + fake2 * fake2));

Fake = (int) ((fake1 * true2 - true1 * fake2) / (true2 * true2 + fake2 * fake2));

}

judge(True, Fake);

 

}

}

}