提交记录 #89

编译情况：编译成功

code.c: In function ‘main’:
code.c:3:5: warning: implicit declaration of function ‘scanf’ [-Wimplicit-function-declaration]
    3 |     scanf("%d",&year);
      |     ^~~~~
code.c:3:5: warning: incompatible implicit declaration of built-in function ‘scanf’
code.c:1:1: note: include ‘<stdio.h>’ or provide a declaration of ‘scanf’
  +++ |+#include <stdio.h>
    1 | int main(){
code.c:19:9: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration]
   19 |         printf("There is 1 Black Friday in year %d.\n",year);
      |         ^~~~~~
code.c:19:9: warning: incompatible implicit declaration of built-in function ‘printf’
code.c:19:9: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’
code.c:24:9: warning: incompatible implicit declaration of built-in function ‘printf’
   24 |         printf("There are %d Black Fridays in year %d.\n",count,year);
      |         ^~~~~~
code.c:24:9: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’

固定测试点#1:

Wrong Answer

0.027s

552 kB

固定测试点#2:

Wrong Answer

0.000s

552 kB

固定测试点#3:

Wrong Answer

0.000s

232 kB

附加测试点暂不可用

不可用

N/A

27【日期】黑色星期五——可以不用数组

int main(){
    int year;
    scanf("%d",&year);
    int count=0;
    int date[10];
    for (int month = 1; month <= 12; month++) {
        int day = 13;
        int century = year / 100;
    int yearOfCentury = year % 100;

    int weekday = (day + (13 * (month + 1)) / 5 + yearOfCentury + (yearOfCentury / 4) + (century / 4) - 2 * century) % 7;

        if(weekday==5){
            date[count]=month;
            count++;
        }
    }
    if(count==1){
        printf("There is 1 Black Friday in year %d.\n",year);
        printf("It is:\n");
        printf("%d/%d/13\n",year,date[0]); 
    }
    if(count>1){
        printf("There are %d Black Fridays in year %d.\n",count,year);
        printf("They are:\n");
        for (int i = 0; i < count; i++) {
            printf("%d/%d/13\n",year,date[i]);
           }
       }
       return 0;}