import java.util.Scanner; public class 草稿 { public static void main(String[] args) { double a=0; int b=0; Scanner A = new Scanner(System.in); a = A.nextDouble(); b = A.nextInt(); A.close(); System.out.println(jiaJian(a,b)); } double jiaJian(int i,int j) { return i+j; } double jiaJian(double i,int j) { return i-j; } }写一个一样的

Java程序，但是将jiaJian方法改为乘法和除法。

import java.util.Scanner;

public class New草稿 {

public static void main(String[] args) {
double a = 0;
int b = 0;
Scanner A = new Scanner(System.in);
a = A.nextDouble();
b = A.nextInt();
A.close();
System.out.println(chengChu(a, b));
}

double chengChu(int i, int j) {
return i * j;
}

double chengChu(double i, int j) {
return i / j;
}
}

相关问题

改正以下代码 import java.util.Scanner; public class Lab { public static void main(String args[]) { Scanner scnr = new Scanner(System.in); int tempInt; double output; tempInt = scnr.nextInt(); double output = (double) tempInt; System.out.println(output); } }

以下是改正后的代码:

import java.util.Scanner;

public class Lab {
public static void main(String args[]) {
Scanner scnr = new Scanner(System.in);
int tempInt;
double output;
tempInt = scnr.nextInt();
output = (double) tempInt;
System.out.println(output);
}
}

问题在于第7行，double output = (double) tempInt; 中的double output 是重复声明了一个变量,需要删除。

import java.math.BigInteger; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int T = sc.nextInt(); while (T-- != 0) { int a = sc.nextInt(); int b = sc.nextInt(); int c = sc.nextInt(); for(int i = 0 ; i < c ; i ++) { double num = Math.pow(2,i) * b + num; System.out.println(num + a); } } } }帮我改正这个java代码

很高兴能帮上忙！改正过的代码如下：import java.math.BigInteger;
import java.util.Scanner;public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int T = sc.nextInt();
while (T-- != 0) {
int a = sc.nextInt();
int b = sc.nextInt();
int c = sc.nextInt();
for(int i = 0 ; i < c ; i++) {
double num = Math.pow(2,i) * b;
System.out.println(num + a);
}
}
}
}