#include int main(void){
int i,j,k,m,mon,y;
int day(int n,int m);//函数的声明
int month(int n,int y);
int year(int y);
printf("Please input one year after year 1900 you want to know:");
scanf("%d",&y);
if(y<1900)//我以1900年为基础算的，所以1900年以前查不了。
printf("I can't tell you this year ^_... |
