本人编写的一个日期推算的程序
#include
#define judge(y) (y%4==0)&&(y%100!=0)(y%400==0)
int allday(int x);
int month1[]=;
int month2[]=;
void main()
{ int i;
int yea1,yea2,mon1,mon2,day1,day2;
int *p;
long jia_day1=0;
long jia_day2=0;
long jia_day3=0;
long jia_day4=0;
long jia_all=0;
printf("请输入第一个年月份 ");
scanf("%d %d %d",&yea1,&mon1,&day1);
printf("请输入第二个年月份 ");
scanf("%d %d %d",&yea2,&mon2,&day2);
if(judge(yea1)) printf("%d是闰年 ",yea1);
if(judge(yea2)) printf("%d是闰年 ",yea2);
if(yea1>yea2)
{ if(judge(yea2)) p=month2;
else p=month1;
jia_day1=*(p+mon2-1)-day2;
for(i=mon2;i<=11;i++)
jia_day2=jia_day2+*(p+i);
for(i=yea2+1;i jia_day3=jia_day3+allday(i); if(judge(yea1)) p=month2; else p=month1; for(i=1;i jia_day4=jia_day4+*(p+i-1); jia_all=jia_day1+jia_day2+jia_day3+jia_day4+day1; printf("%d%d%d比%d%d%d迟%d天 ",yea1,mon1,day1,yea2,mon2,day2,jia_all); } else if(yea1 { if(judge(yea1)) p=month2; else p=month1; jia_day1=*(p+mon1-1)-day1; for(i=mon1;i<=11;i++) jia_day2=jia_day2+*(p+i); for(i=yea1+1;i jia_day3=jia_day3+allday(i); if(judge(yea2)) p=month2; else p=month1; for(i=1;i jia_day4=jia_day4+*(p+i-1); jia_all=jia_day1+jia_day2+jia_day3+jia_day4+day2; printf("%d%d%d比%d%d%d迟%d天 ",yea2,mon2,day2,yea1,mon1,day1,jia_all); } else { if(judge(yea1)) p=month2; else p=month1; if(mon1>mon2) { jia_day1=*(p+mon2-1)-day2; for(i=mon2+1;i jia_day2=jia_day2+*(p+i-1); jia_all=jia_day1+jia_day2+day1; printf("第一个时间比第二个时间迟%d天 ",jia_all); } else if(mon1 { jia_day1=*(p+mon1-1)-day1; for(i=mon1+1;i jia_day2=jia_day2+*(p+i-1); jia_all=jia_day1+jia_day2+day2; printf("第一个时间比第二个时间早%d天 ",jia_all); } else {if(day1>day2) printf("第一个时间比第二个时间迟%d天 ",(day1-day2)); else if(day1 printf("第一个时间比第二个时间早%d天 ",(day2-day1)); else printf("这俩个时间相等 "); } } } int allday(int x) { int y; if(((x%4==0)&&(x%100!=0))((x%100==0)&&(x%400==0))) {y=366; printf("在这俩个数据中:%d是闰年 ",x);} else y=365; return (y); }
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