# C > Beginners Lab Assignments Code Examples

## Calendar Program

``` Calendar Program #include<conio.h> int day(int m1,int y1) { int d; if(m1==1 || m1==3 || m1==5 || m1==7 || m1==8 || m1==10 || m1==12) d=31; else if(m1==4 || m1==6 || m1==9 || m1==11) d=30; else if((y1%100!=0 && y1%4==0) || y1%400==0) d=29; else d=28; return d; } void main() { long unsigned int t; unsigned int y,y1,m,m1,d,da,i,j,k; char a[12][20]={"January","February","March","April","May","June","July","Augus t","September","October","November","December"}; clrscr(); textcolor(CYAN); cprintf("Enter the year: "); scanf("%4u",&y); if(y<0) y=-y; cprintf(" Enter the month: "); scanf("%2u",&m); if(m<=0 || m>=13) m=1; clrscr(); gotoxy(32,2); cprintf("Calendar"); y1=0; t=0; while(y1<y) { if((y1%100!=0 && y1%4==0) || y1%400==0) t=t+366; else t=t+365; y1++; } m1=1; while(m1<m) { d=day(m1,y); t=t+d; m1++; } d=t%7; printf(" Year: '%u'",y); printf(" Month: '%s' ",a[m-1]); printf("%6s%6s%6s%6s%6s%6s%6s ","Sun","Mon","Tue","Wed","Thu","Fri","Sa t"); textcolor(GREEN); k=1; for(i=1;i<=day(m,y);i++,k++) { if(i==1) { if(d==0) { for(j=1;j<7;j++,k++) printf("%6s",""); } else { for(j=1;j<d;j++,k++) printf("%6s",""); } } cprintf("%6d",i); if(k%7==0) printf(" "); } gotoxy(27,22); cprintf("www"); getch(); } ```