#include <stdio.h> void main() { int year,month,day; bool a; printf("enter year "); scanf("%d",&year); printf("enter month "); scanf("%d",&month); printf("enter day "); scanf("%d",&day); if((year%4==0&&year%100!=0)||(year%400==0)) { printf("year is run nian "); switch(month) { case 1 :printf("today is %d",day); case 2 : day=+31; printf("today is %d",day); break; case 3: day=31+28+day; printf("today is %d",day); break; case 4: day=30+28+30+day; printf("today is %d",day); break; case 5: day=88+31+day; printf("today is %d",day); break; case 6:day=88+31+30+day; printf("today is %d",day); break; case 7:day=88+31+30+day+31; printf("today is %d",day); break; case 8:day=88+31+30+day+31+31; printf("today is %d",day); break; case 9:day=88+31+30+day+31+30+30; printf("today is %d",day); break; case 10:day=88+31+30+day+31+30+30+31; printf("today is %d",day); break; case 11:day=88+31+30+day+31+30+30+30+30; printf("today is %d",day); break; case 12:day=88+31+30+day+31+30+30+31+31; printf("today is %d",day); break; }} }