JAVA第一次上机作业

1。package com.itheima01;

public class HelloWorld {
public static void main(String[] args){
    int a=1;
    int b=2;
    int c;
    c=a;
    a=b;
    b=c;
    
    
    System.out.println("a的值是"+a+"b的值是"+b);
}
}
2.package com.itheima01;66666

public class HelloWorld {
public static void main(String[] args){
    int a=909;
    int b=a%10;
    int c=a%100/10;
    int d=a/100;
    int sum=b+c+d;
    System.out.println(sum);
}
}
3.package com.itheima01;

public class HelloWorld {
public static void main(String[] args){
    double a=95;//华氏温度
    double b=36;//摄氏温度
    double c=(a-32)*5/9;
    double d=b*9/5+32;
    System.out.println(c);
    System.out.println(d);
}
}
4.package com.itheima01;

public class HelloWorld {
public static void main(String[] args){
    char e='E';
    System.out.println((char)(e+32));
}
}