C语言问题求教
#include <stdio.h>#include <stdlib.h>
int judge_year(int year) /*判断是否闰年*/
{if(year%4==0&&year%100==0||year%400==0)
{printf("这是闰年\n");return 1;}
else {printf("这不是闰年\n");return 2;}
}
int the_days_of_year(int year,int month,int day)/*求日子数*/
{int n;
switch(month)
{case 1:n=day;
return n;
case 2:n=31+day;
return n;
case 3:{if(year%4==0&&year%100==0||year%400==0)
n=60+day;
else n=59+day;}
return n;
case 4:{if(year%4==0&&year%100==0||year%400==0)
n=91+day;
else n=90+day;}
return n;
case 5:{if(year%4==0&&year%100==0||year%400==0)
n=121+day;
else n=120+day;}
return n;
case 6:{if(year%4==0&&year%100==0||year%400==0)
n=152+day;
else n=151+day;}
return n;
case 7:{if(year%4==0&&year%100==0||year%400==0)
n=182+day;
else n=181+day;}
return n;
case 8:{if(year%4==0&&year%100==0||year%400==0)
n=213+day;
else n=212+day;}
return n;
case 9:{if(year%4==0&&year%100==0||year%400==0)
n=244+day;
else n=243+day;}
return n;
case 10:{if(year%4==0&&year%100==0||year%400==0)
n=274+day;
else n=273+day;}
return n;
case 11:{if(year%4==0&&year%100==0||year%400==0)
n=305+day;
else n=304+day;}
return n;
case 12:{if(year%4==0&&year%100==0||year%400==0)
n=335+day;
else n=334+day;}
return n;
}}
void chanian()/*查询项1*/
{ int s;
int year,month,day;
int k;
printf("1.判断是否闰年\n2.查看该是是该年的第几天\n3.查看这是第几周\n4.返回主菜单");
printf("输入你的选择:");scanf("%d",&s);
switch(s)
{ case 1:
{printf("输入年月日,格式如：2012,1,23:");
scanf("%d,%d,%d",&year,&month,&day);
judge_year(year);}
case 2:
{printf("输入年月日,格式如：2012,1,23:");
scanf("%d,%d,%d",&year,&month,&day);
k=the_days_of_year(year,month,day);
printf("该日是%d天\n",k);}
case 3:
{printf("输入年月日,格式如：2012,1,23:");
scanf("%d,%d,%d",&year,&month,&day);
k=the_days_of_year(year,month,day);
if(k%7==0) printf("这一周是第%d周",k/7);
else printf("这一周是第%d周",k/7+1);}
case 4:exit(0);
default:printf("输入有误");
}}
char *month[]={"January","February","March","April","May","June","July","August","September","October","November","December"};
char *week[]={"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};
int month_day(int year,int month)
{
int mon_day[]={31,28,31,30,31,30,31,31,30,31,30,31};
if(judge_year(year)&&month==2)
return 29;
else
return(mon_day[month-1]);
}
int PrintAllYear(int year)/*打印全年月份表,查询项2*/
{
int temp;
int i,j;
printf("\n\n%d Calander\n",year);
for(i=1;i<=12;i++)
{
printf("\n\n%s(%d)\n",month[i-1],i);
printf("0 1 2 3 4 5 6 \n");
printf("S M T W T F S \n\n");
temp=the_days_of_year(year,i,1);
for(j=1;j<=month_day(year,i)+temp;j++)
{
if(j-temp<=0)
printf(" ");
else if(j-temp<10)
printf("%d ",j-temp);
else
printf("%d ",j-temp);
if(j%7==0)
printf("\n");
}
}
return 0;
}
void main()
{int year,month,day;
int a;while(1)
{printf("选择你要选择的选项:\n1.查询日期\n2.查看万年历\n3.结束\n");
printf("请输入你的选择");
scanf("a",&a);
switch(a)
{case 1:while(1)
{chanian();}
case 2:while(1)
{printf("输入年月日，格式如2012,1,23");
scanf("%d,%d,%d",&year,&month,&day);
PrintAllYear(year);}
case 3:break;
default:("输入有误");}
}}
这是源代码，为什么得不到我要的功能？
追问：你有试过调试吗？
