48 : C Program to Display day of week using switch case

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User inputs a number between 1-7 and program outputs equivalent day on the console using switch case logic.

Logic :

1 => Sunday
2 => Monday
3 => Tuesday
4 => Wednusday
5 => Thursday
6 => Friday
7 => Saturday

Any other number 0, 8,9 etc : Invalid! 


  switch(day)  {

     case 1:
        //Sunday
     break;
     
      case 2:
        //Monday   
     break;
     
      case 3:
        //Tuesday
     break;
     
      case 4:
        //Wednesday
     break; 
     
     case 5:
       //Thursday
     break;
     
      case 6:
        //Friday
     break;
     
      case 7:
        //Saturday
     break;
     
   default:
        //Invalid

}


Variables :

number : Datatype int : Holds value of year inputted by the user. %d is the Format specifier for int's

i : Datatype int : variable used in for loop

unsigned : Datatype long : To hold result. As factorial cannot be negative we set it as unsigned 








/*
 * 1000+ C programs + tutorials
 *
 * 
 * 43_Display_day_of_week_switch_case_C_program.c
 *
 *
 *  Created on: Oct 20, 2014
 *  Author: Code2care.org
 */

#include 
//#include 



void main() {

int day;

  

//clrscr();

    printf("C Program Displays Day of Week for entered number");

    printf("\n\n Enter Day (1-7) : ");
    scanf("%i", &day);

    
  switch(day)  {

     case 1:
    printf("\n\n The 1st day of week is : Sunday");
     break;
     
      case 2:
    printf("\n\n The 2nd day of week is : Monday");
     break;
     
      case 3:
    printf("\n\n The 3rd day of week is : Tuesday");
     break;
     
      case 4:
    printf("\n\n The 4th day of week is : Wednesday");
     break; 
     
     case 5:
    printf("\n\n The 5th day of week is : Thursday");
     break;
     
      case 6:
    printf("\n\n The 6th day of week is : Friday");
     break;
     
      case 7:
    printf("\n\n The 7th day of week is : Saturday");
     break;
     
   default:
    printf("Invalid input!!! ..... ");

}
    
//getch();


}








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