双行道编程题
㈠ 两道C++编程题
#include <iostream>
using namespace std;
int main()
{
int i=1,a,b,c,d,e,f;
for (i=1;i<=30;i++)
{
a=i+1;
b=a+2;
c=b+3;
d=c+4;
e=d+5;
f=e+6;
if (i+a+b+c+d+e+f==105)
cout <<"号码为"<<i <<a <<b <<c <<d <<e <<f <<endl;
}
return 0;
}
㈡ 两道java编程题
题一、
package Test;
import java.util.Scanner;
public class FirstOne {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("请输入a");
while (scanner.hasNext()) {
double x = 0;
double y = 0;
// System.out.println("请输入a");
int a = scanner.nextInt();
System.out.println("请输入b");
int b = scanner.nextInt();
System.out.println("请输入c");
int c = scanner.nextInt();
System.out.println("请输入d");
int d = scanner.nextInt();
System.out.println("请输入e");
int e = scanner.nextInt();
System.out.println("请输入f");
int f = scanner.nextInt();
int tep = a * d - b * c;
if (tep == 0) {
System.out.println("方程无解");
} else {
double x1 = e * d - b * f;
double y1 = a * f - e * c;
x = x1 / tep;
y = y1 / tep;
System.out.println("x=" + x);
System.out.println("y=" + y);
}
System.out.println("如果还要计算，请输入a");
}
}
}
题二、可以用递归，但是我着急回家写的bug就换了一种有点麻烦的，等回家给你追加递归的。
package Test;
import java.util.Scanner;
public class NextOne {
public static void main(String[] args) {
Scanner scanner=new Scanner(System.in);
System.out.println("请输入展示行数n");
int n=scanner.nextInt();
System.out.println("i\t\tm(i)");
for (int i = 1; i <=n; i++) {
System.out.println(i + "\t\t" + getNum(i));
}
}
public static double num(int n){
return n/(double)(n+1);
}
public static double getNum(int n){
double sum=0;
for (int i = 1; i <= n; i++) {
sum+=num(i);
}
return sum;
}
}
㈢ 两道C语言编程题，运行结果有问题或者不能运行，求高手指出！！谢谢！
while(s)
{
a[i++]=s%10;s/=10;
}
第一次循环结束后a[0]=5,s=0,i=1,然后退出循环打印a[0]=5,还有什么不清楚的么？
第2个你范的错误是不要用“，”作为分隔符啊。scanf里没有指定用"，"做分隔符你拿这个做什么输入分隔符啊
㈣ 两道C语言编程题，求答案。。。求帮忙
//第一题
#include <stdio.h>
#include <string.h>
int main(void)
{
char f_name[24];
char str[100];
printf("please enther the file name:");
scanf("%s",str);
sprintf(f_name,"%s.txt",str);
FILE *fp=fopen(f_name,"w+");
printf("please enther the string:");
scanf("%s",str);
fprintf(fp,"%s%d",str,strlen(str));
return 0;
}
//第二题
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct {
int num;
char name[20];
int math;
int chin;
int eng;
int avg;
}student;
void cal_avg(student *stu)
{
int i=0;
for (i;i<5;i++)
{
stu[i].avg=(stu[i].chin+stu[i].math+stu[i].eng)/3;
}
}
int output(student *stu)
{
FILE *fp=fopen("stud.txt","w+");
if (fp==NULL)
{
printf("can't open file!");
return -1;
}
fwrite(stu,sizeof(student),5,fp);
return 1;
}
void input(student *stu)
{
int i=0;
for (i;i<5;i++)
{
stu[i].num=i+1;
printf("please enther the %dth student's name:",i+1);
scanf("%s",stu[i].name);
printf("please enther the %dth student's math grade:",i+1);
scanf("%d",&stu[i].math);
printf("please enther the %dth student's chin grade:",i+1);
scanf("%d",&stu[i].chin);
printf("please enther the %dth student's eng grade:",i+1);
scanf("%d",&stu[i].eng);
printf("/********************************************/\n");
}
}
int main(void)
{
student stu[5];
input(stu);
cal_avg(stu);
output(stu);
return 0;
}
㈤ 求这道编程题的过程。输入有两行。第1行是一个整数n（2≤n≤100000），表示一共有n个同学。
#include<bits/stdc++.h>
usingnamespacestd;
intn,a[200001];
intmain(){
scanf("%d",&n);
for(inti=1;i<=n;i++)scanf("%d",&a[i]);
sort(a+1,a+n+1);
for(inti=1;i<=n;i++)printf("%d",a[i]);
}
㈥ 两道编程题
作业都是一样的？，改改类名和类成员名吧还有，前面有一个有同问了
publicclassTest1{
publicstaticvoidmain(String[]args){
//----TreeSet--------------
Set<Student>set=newTreeSet<Student>();
addTestData(set);
printData(set);
//---HashSet-----------
set=newHashSet<Student>();
addTestData(set);
printData(set);
}
publicstaticvoidaddTestData(Setset){
Students1=newStudent("d_name1",30);
Students2=newStudent("a_name2",20);
Students3=newStudent("c_name3",26);
Students4=newStudent("b_name4",24);
Students5=newStudent("c_name1",30);
Students6=newStudent("c_name1",30);
System.out.println(set.add(s1)==true?"加入":"重复");
System.out.println(set.add(s2)==true?"加入":"重复");
System.out.println(set.add(s3)==true?"加入":"重复");
System.out.println(set.add(s4)==true?"加入":"重复");
System.out.println(set.add(s5)==true?"加入":"重复");
System.out.println(set.add(s6)==true?"加入":"重复");
}
publicstaticvoidprintData(Setset){
for(Iterator<Student>iterator=set.iterator();iterator.hasNext();){
Studentstudent=iterator.next();
System.out.println(set.getClass().getName()+"姓名:"+student.name
+"年龄:"+student.age);
}
}
}
{
intage;
Stringname;
Student(Stringname,intage){
this.age=age;
this.name=name;
}
publicbooleanequals(Objectobj){
//TODOAuto-generatedmethodstub
Students=(Student)obj;
return(age==s.age&&name.equals(s.name));
}
publicinthashCode(){
//TODOAuto-generatedmethodstub
returnage*name.hashCode();
}
publicintcompareTo(Objectobj){
Studentstu=(Student)obj;
//先按年龄排，后按姓名排
intnum=newInteger(this.age).compareTo(newInteger(stu.age));
returnnum==0?this.name.compareTo(stu.name):num;
}
}publicclassTest3{
publicstaticvoidmain(String[]args){
try{
SimpleDateFormatsf=newSimpleDateFormat("yyyy-MM-dd");
printDate(sf.parse("2013-05-13"),sf.parse("2013-08-13"));
}catch(ParseExceptione){
System.out.println("输入的日期格式错误");
}
}
publicstaticvoidprintDate(Dated1,Dated2){
CalendarstartDate=Calendar.getInstance();//开始日期
startDate.setTime(d1);
CalendarminDate=Calendar.getInstance();//允许的最小日期
minDate.setTime(d2);
minDate.add(Calendar.MONTH,-3);
if(d2.getTime()>System.currentTimeMillis()){
System.out.println("结束时间不能大于当前时间");
return;
}elseif(d1.getTime()>d2.getTime()){
System.out.println("开始时间不能大于结束时间");
return;
}
if(startDate.getTimeInMillis()<minDate.getTimeInMillis()){
System.out.println("开始日期与结束日期不能超过3个月");
return;
}
System.out.println("在范围内");
}
}
㈦ 关于两道C语言编程题
#include
"stdio.h"
#include
"conio.h"
#define
N(n)
(1+(n))*(n)/2
//第一题
#define
Max(a,b)
(a)>(b)?(a):(b)
//第二题
//这种题目是要你注意给宏加()，防止使用代数式时出错吧
int
main()
{
int
a,b;
int
n;
scanf("%d",&n);
printf("Add
form
1
to
%d
==%d\n",n,N(n));
printf("Please
Input
Two
Number\n");
scanf("%d",&a);
scanf("%d",&b);
printf("Max
Number
You
Input
Is:
%d\n",Max(a,b));
getch();
return
0;
}
㈧ 求大神帮我做两道C语言编程习题~~
1#include<stdio.h>
#include<math.h>
void main()
{
double x,y,z;
printf("请输入x的值：");
scanf("%lf",&x);
printf("请输入y的值：");
scanf("%lf",&y);
if(x>0&&y>0)
z=log(x)+log(y);
else if(x<0&&y>0)
z=sin(x)+sin(y);
else if(x<0&&y<0)
z=exp(2*x)+exp(3*y);
else
z=tan(x+y);
printf("z=%lf\n",z);
}
2、#include<stdio.h>
void main()
{
float money=0;
int year=1;
printf("请输入本金：");
scanf("%f",&money);
f: printf("请输入期限：");
scanf("%d",&year);
while(year<1)
goto f;
switch(year)
{
case 1:money=money+money*12*0.063;break;
case 2:money=money+money*24*0.066;break;
case 3:money=money+money*36*0.069;break;
case 4:money=money+money*48*0.069;break;
case 5:money=money+money*60*0.075;break;
case 6:money=money+money*72*0.075;break;
case 7:money=money+money*84*0.075;break;
case 8:money=money+money*96*0.084;break;
default:money=money+money*12*year*0.084;break;
}
printf("您能得到的利息和本金合计为%f",money);
}
㈨ C语言中两道编程题求救!
第一题：
#include<stdio.h>
//定义一个结构，记录一个学生的信息
typedef struct{
char num[10];
char name[10];
int score[3];
} STUDENT;
int main()
{
FILE* file; //文件指针，用于打开文件和将数据写入文件的一个接口
STUDENT student[5]; //5个学生
int i,j;
double ave[3]; //计算各门课平均分用的
printf("请依次输入5个学生的信息：\n");
for (i=0; i<5; i++) //输入信息
{
scanf("%s%s",student[i].num,student[i].name);
for (j=0; j<3; j++) scanf("%d",&student[i].score[j]);
}
for (i=0; i<3; i++) ave[i]=0;
for (j=0; j<5; j++)
for (i=0; i<3; i++) ave[i]=ave[i]+student[j].score[i]; //先计算总分
for (i=0; i<3; i++) ave[i]=ave[i]/5.0; //算平均分
file=fopen("ZK1","w"); //打开一个文件，文件名叫ZK1
//下面使用fprintf将信息写入磁盘文件中
for (i=0; i<5; i++)
{
fprintf(file,"%s %s ",student[i].num,student[i].name);
for (j=0; j<3; j++) fprintf(file,"%d ",student[i].score[j]);
fprintf(file,"\n");
}
//写入三门课的平均成绩
fprintf("三门课的平均成绩分别是：");
for (i=0; i<3; i++) fprintf(file,"%lf ",ave[i]);
fclose(file); //关闭，保存文件
return 0;
}
至于第二题的程序
第22行，你写的是 scanf("%f',&s[i].avgcj);
你把%f后面的双引号打成单引号了
另外还有倒数第二行，你写的是 printf("sname=%s sum=%f",s[j].sname sum);
在s[j].sname和sum中间，你忘记打个逗号了
另外，你的struct定义写得不对，应该这样写：
typedef struct
{
int sno;
char sname[20];
float ywcj;
float sxcj;
float yucj;
float avgcj;
}student;
student s[5];