#include <stdio.h>
int main(){
int days;
printf("请输入天数:");
scanf("%d", &days);
while (days > 0){
int weeks = days / 7;
printf("%d days are %d weeks, %d days\n", days, weeks, days % 7);
printf("请输入天数:");
scanf("%d", &days);
}
return 0;
}
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