作业七

 A

 

//输入生日和日期，计算你活了多少天
#include<stdio.h>
int   is_year(int year){
 if((year%4==0&&year%100!=0)||(year%400==0)){year=1;}
 else year=0;
 return year;
 
}
int is_mouth(int year,int mouth,int day){
 day=0;
 if(mouth==2){
  if(is_year(year)){day=29;}
  else day=28;
 }
 else if(mouth==0) day=0;
 else if(mouth==4||mouth==6||mouth==9||mouth==11)
  day=30;
 else day=31;
 return day;
}

int main(void)
{
 int year1,mouth1,day1,year2,mouth2,day2,i,days,day5,day6,day,k,m;
 day=0;
 year1=2000;
 mouth1=1;
 day1=1;
 while(day1!=0){

 printf("今天的日期：");
 scanf("%d%d%d",&year2,&mouth2,&day2);
 day6=day5=0;
 for(i=1;i<=mouth2-1;i++){
  day6+=is_mouth(year2,i,day);
 }
 day6+=day2;
 for(i=1;i<=mouth1-1;i++){
  day5+=is_mouth(year1,i,day);
 }
 day5+=day1;
 k=0;
 m=0;

 for(i=year1;i<=year2-1;i++){
  if(is_year(i)) k++;
  else m++;
 }
 days=366*k+365*m;
 days=days+day6-day5+1;
 if(days%5==3||days%5==2||days%5==1)
  printf("%d-%d-%d: he was fishing at that day.\n",year2,mouth2,day2);
 if(days%5==4||days%5==0)
  printf("%d-%d-%d: he was sleeping at that day.\n",year2,mouth2,day2);

 }
 return 0;
}

 F

#include<stdio.h>
int sp(int m){
 int i;
 for(i=2;i<=m/2;i++){
  if(m%i==0)
   return 0;}
 if(i>m/2&&m!=1)
  return m;
}
int main(void)
{
 int n,a=0,b=0;
 scanf("%d",&n);
 while(n!=0){
  if(n>0&&n<6)
   printf("%d is smaller than 6!\n",n);
  if(n>6&&n%2!=0)
   printf("%d is an odd number!\n",n);
  if(n<0)
   printf("%d is a negative number!\n",n);
  if(n>=6&&(n%2==0)){
   for(a=1;a<=n/2;a++){
    b=n-a;
    if((sp(a))&&(sp(b))){
     printf("%d=%d+%d\n",n,a,b);
     break;
    }
   }
  }
  scanf("%d",&n);
 }
 return 0;
}

 

 

 

 

 

 

G

#include<stdio.h>
int main()
{
 int i,j=0,n,a[100],t,index;
 char w;
 scanf("%d %c",&n,&w);
 while(!n==0){
  for(i=0;i<n;i++)
   scanf("%d",&a[i]);
  if(w=='a'||w=='A'){
   printf("%d A\n",n);
   for(i=0;i<n;i++){
    index=i;
    for(j=i;j<n;j++)
     if(a[index]>a[j])
      index=j;
    t=a[index];
    a[index]=a[i];
    a[i]=t;
    printf("%d ",a[i]);
   }

  }
  if(w=='d'||w=='D'){
   printf("%d D\n",n);
   for(i=0;i<n;i++){
    index=i;
    for(j=i;j<n;j++)
     if(a[index]<a[j])
      index=j;
    t=a[index];
    a[index]=a[i];
    a[i]=t;
    printf("%d ",a[i]);
   }

  }
  printf("\n\n");

  scanf("%d %c",&n,&w);

 }
 return 0;
}