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  • 第一次上机作业

    1.package finish;
    
    public class csy {
        public static void main(String[] args) {
            // TODO Auto-generated method stub
                int a = 100;
                int b = 200;
                int c;
                c = a;
                a = b;
                b = c;
                System.out.println("交换后的a:"+ a + ",b:" + b);    
            }
    
    }

    2.package finish;
    import java.util.*;
    public class csy {
    	public static void main(String[] args) {
    		System.out.println("请输入一个1~1000的整数:");
    		Scanner sc = new Scanner(System.in);
    		int a = sc.nextInt();
    		int b, c, d, e, sum;
    		e = a / 1000;
    		b = a / 100 % 10;
    		c = a  / 10 % 10;
    		d = a % 10;
    		sum = b +c +d +e;
         		System.out.println("结果为" + sum);
    		}
    }
    

      

    3.package finish;
    
    public class csy {
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		double f=100;
    		double c=37;
    		System.out.println((f-32)*5/9);
    			System.out.println(c*9/5+32);	
    		}
    
    }
    

      

    4.package finish;
    public class csy {
    	public static void main(String[] args) {
    		char c='A';
         		System.out.println((char)(c+32));
    		}
    }
    

      

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  • 原文地址:https://www.cnblogs.com/csy521/p/12523327.html
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