关于C语言的问题。设计一个程序，根据用户的选择，将1、日期转换为天数2、将天数转换为日期。

Posted 2023-03-19

#include<stdio.h>

int main()

#define MAXNUM1 14
#define MAXNUM2 14

int a,b,c,Y,M,D,Days;
int Days_[MAXNUM1]=0,31,28,31,30,31,30,31,31,30,31,30,31;
int Date[MAXNUM2]=0,1,2,3,4,5,6,7,8,9,10,11,12;

printf("Plese choose what you want to do.\n1.Date change Days\n2.Days change Date\n");
scanf("%d",&a);
if(a==1)

printf("Plese enter a date(Y\M\D).\n");
scanf("%d %d %d",&Y,&M,&D);

if(Y%4==0||Y%100!=0||Y%400==0)


for(b=1;b<2;b++)
if(b<2)

Days=Days_[b]+D;
printf("The date which you enter is the %d days.\n",Days);

else if(b>=2)

Days=Days_[b]+D+1;
printf("The date which you enter is the %d days.\n",Days);

else

for(b=1;b<=M;b++)
if(b<2)

Days=Days_[b]+D;
printf("The date which you enter is the %d days.\n",Days);

else if(b>=2)

Days=Days_[b]+D;
printf("The date which you enter is the %d days.\n",Days);





else

printf("Plese enter a days.");
scanf("%d",&Days);

代码存在一些问题：

#include<stdio.h
#define MAXNUM1 14
#define MAXNUM2 14
int main()

int a,b,c,Y,M,D,Days;
int Days_[MAXNUM1]=0,31,28,31,30,31,30,31,31,30,31,30,31;
int Date[MAXNUM2]=0,1,2,3,4,5,6,7,8,9,10,11,12;

printf("Plese choose what you want to do.\\n1.Date change Days\\n2.Days change Date\\n");
scanf("%d",&a);
if(a==1)
              Days = 0;
printf("Plese enter a date(Y\\M\\D).\\n");
scanf("%d %d %d",&Y,&M,&D);
if(Y%4==0&&Y%100!=0||Y%400==0)//这里改下

    for(b=1;b < M;b++)
     if(b==2)//闰年二月加一天
     
Days+=Days_[b]+1;      
     else 
     
        Days+=Days_[b];
     
  
                else
                
                   for(b=1;b < M;b++)
                   
       Days+=Days_[b];
    
                
                 Days += D;   
 printf("The date which you enter is the %d days.\\n",Days);
    else //a==2
    
printf("Plese enter a days.");
scanf("%d",&Days);
for(b=1;b < 13;b++)//未考虑年份的问题

    if(Days <= Days_[b]) break;
    Days -= Days_[b];

printf("The day which you enter is the %d\\%d days.\\n",b,Days);
    

上面是简单的实现，希望有帮助

追问

多谢啦。我之前已经采纳了一个，不过你的也是很好的。如果能采纳两个的话就好了。我就连你的也采纳。

参考技术A 是当年的吧，要是跨年，计算就不是这水平的了

~
~
~ 参考技术B // xx.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include<stdio.h>

int main()

#define MAXNUM1 14
#define MAXNUM2 14

int a,b,Y,M,D,Days;
int Days_[MAXNUM1]=0,31,28,31,30,31,30,31,31,30,31,30,31;
int Date[MAXNUM2]=0,1,2,3,4,5,6,7,8,9,10,11,12;

printf("Plese choose what you want to do.\\n1.Date change Days\\n2.Days change Date\\n");
scanf("%d",&a);
if(a==1)

printf("Plese enter a date(Y\\\\M\\\\D).\\n");
scanf("%d %d %d",&Y,&M,&D);

for(Days=0,b=1;b<M;++b)
Days += Days_[b];
Days += D;
if(Y%4==0 && (Y%100!=0||Y%400==0))
++Days;
printf("The date which you enter is the %d days.\\n",Days);

else

printf("Plese enter a days.");
scanf("%d",&Days);


return 0;

本回答被提问者采纳 参考技术C 没明白你说的天数是什么意思?