编程题总结已改

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1、1.importjava.util.Sccinner;classa{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);System.out.println("请输入两个整数，电脑帮你计算和差积商inta,b,z,x,c;a=sc.nextlnt();b=sc.nextlnt();z=a+b;x=a-b;c=a*b;doublev=1.0*a/b;System.out.println(H和=”+z);System,out.printing差二”

2、+x);System.out.println(n积=”+c);System.out.println(H商=”+v);2、分解五位数importjava.util.Scanner;classab{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);System.out.println("输入一个由5位数字组成的整数”)；inta,z,x,c,v,b;a=sc.nextlnt();z=a/10000;x=a/1000%10;c=a/10()%10;

3、v=a%100/10;b=a%10;System.out.println(z+M”+x+””+c+”“+v+“u+b);}3、判断正负importjava.util.Scanner;classpd{publicstaticvoidmain(String[]args)(Scannersc=newScanner(System.in);System.out.println(H输入一个数,电脑为你判断正负”);doublex=sc.nextDouble();if(x>=0)System.out.println("正数”);elseS

4、ystem.out.printlnC'负数“);4、判断奇偶importjava.util.Scanner;classpdjo{publicstaticvoidmain(Stringnargs){Scannersc=newSeanner(System.in);System.out.println(H输入一个数，电脑为你判断奇偶“);inta=sc.nextlnt();intx=a%2;if(x==0)System.out.printlnC*偶数“)；elseSystem.out.printlnC'奇数”);)}5、判断倍数对

5、importjava.util.Scanner;classa(publicstaticvoidmain(String[]args){Scannersc二newScanner(System.in);System.out.printlnC'请输入两个整数,电脑帮你计算倍数。”);inta,b;a=sc.nextlnt();b=sc.nextlnt();if(a%b==0)System.out.println(a+M是“+b+"的”+a/b+”倍“)；elseSystem.out.printlnC'不是整数倍”)；6、打成绩分级i

6、mportjava.util.Scanner;classcj{publicstaticvoidmain(String[]args){Scannersc=newSeanner(System.in);System.out.print(u请输入成绩”);intx=sc.nextlnt();chary;if(x<60)elseif(x<80)elseif(x<90)elseyi差：cha「型用单引号或不用引号y=中;y=‘良'；y=优；System.out.println(y);7、缴电费importjava.util.Scanne

7、r;classdf{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);System.out.printC*输入电费度数“)；doublex=sc.nextDouble();doubley;if(x>=30){y=0.5*x;}else{y=0.7*(x-30)+0.5*x;}System.out.println(H本月度数”+x+nn+•应缴八+y+"元J;}}8、编程解方程y=l(x>0)y=0(x=0)y=-1(x<0)importj

8、ava.util.Scanner;classa(publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);System.ou匸print(Hx=?”)；doublex=sc.nextDouble();doubley