Something

#include <stdio.h>

int main()
{
 	int num, i;
 	printf("Enter the number of the month you want to view: ");
 	scanf("%d", &num);
 	printf("\nHere is the calendar for you for month %d\n", num);
 	printf("-------------------------------------------\n");
 	printf("                                            \n");
 	switch(num)
 	{
        case 1 :
		{
		 	 printf("Mon\t Tue\t Wed\t Thurs\t Fri\t Sat\t Sun\n");
		 	 for(i=1;i<=31;i++)
		 	 {
		         if(i==7||i==14||i==21||i==28)
		         {
		         printf(" %d\n", i);
				 }
				 else
		         printf(" %d\t", i);
		         
		     }
		     break;
	     }
	     
	     case 2 :
		 {
			   	   printf("Mon\t Tue\t Wed\t Thurs\t Fri\t Sat\t Sun\n");
			   	   printf("\t\t\t");
				   for(i=1;i<=28;i++)
			   	   {
	   				    if(i==4||i==11||i==18||i==25)
                        {
                            printf(" %d\n", i);
						}
						else
						printf(" %d\t", i);
					}
			   	   break;
		 }
		 
		 case 3 :
		 {
			   	   printf("Mon\t Tue\t Wed\t Thurs\t Fri\t Sat\t Sun\n");
			   	   printf("\t\t\t");
				   for(i=1;i<=30;i++)
			   	   {
	   				    if(i==4||i==11||i==18||i==25)
                        {
                            printf(" %d\n", i);
						}
						else
						printf(" %d\t", i);
					}
			   	   break;
		 }
		 
			      
	     default : 
		 		 {
		 		 printf("Invalid month number");
		 		 break;
				 }
	 }
	 fgetc(stdin);
	 getch();
}