CLS.zip_cls

#include<stdio.h> #include<conio.h> #include<dos.h> char month[12][10]={"JAN","FEB","MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT" ,"NOV","DEC"}; char week[7][10]={"MON","TUE","WED","THU","FRI","SAT","SUN"}; long int days=0,year,mon,lp,i,dd,tab,n; void main() { int leap(int); clrscr(); printf("Enter a year : "); scanf("%d",&year); printf("Enter a month (1-12) : "); scanf("%d",&mon); if(year>1900) { for(i=1900;i<year;i++) { lp=leap(i); if(lp==1) days+=366; else days+=365; } } else if(year<1900) { for(i=1900;i>=year;i--) { lp=leap(i); if(lp==1) days+=366; else days+=365; } } i=1; while(i<mon) { if(i==1 || i==3 || i==5 || i==7 || i==8 || i==10 || i==12) { dd=31; if(year>=1900) days+=dd; else days-=dd; } else if(i==4 || i==6 || i==9 || i==11) { dd=30; if(year>=1900) days+=dd; else days-=dd; } else { lp=leap(year); if(lp==1) { dd=29; if(year>=1900) days+=dd; else days-=dd; } else { dd=28; if(year>=1900) days+=dd; else days-=dd; } } i++; } clrscr(); for(i=1;i<70;i++) printf("_"); for(i=1;i<5;i++) printf(""); for(i=1;i<5;i++) printf(" "); printf("%d",year); for(i=1;i<3;i++) printf(""); for(i=1;i<5;i++) printf(" "); printf("%s",month[mon-1]); for(i=1;i<70;i++) printf("_"); printf(""); for(i=0;i<7;i++) printf(" %s",week[i]); printf(" "); tab=days%7; if(mon==1 || mon==3 || mon==5 || mon==7 || mon==8 || mon==10 || mon==12) { dd=31; } else if(mon==4 || mon==6 || mon==9 || mon==11) { dd=30; } else { lp=leap(year); if(lp==1) { dd=29; } else { dd=28; } } n=1; for(i=1;i<=7;i++) { if(i<=tab) { printf(" "); } else { printf("%2d ",n); n++; } } printf(" "); while(n<=dd) { i=1; while(i<=7) { if(n<=dd) { printf("%2d ",n); n++;i++; } else break; } printf(" "); } printf(""); for(i=1;i<70;i++) printf("_"); getch(); } int leap(int y) { if(y%4==0) { if(y%100==0) { if(y%400==0) return 1; else return 0; } return 1; } else return 0; }