Programming in C to find the name of the day of the week particularly

#include<stdio.h>
#include<conio.h>
void main()
{
int x;
printf("\nEnter any no. between 1 to 7\n");
scanf("%d",&x);
switch(x)
{
case 1:
printf("\n1st day is Sunday");
break;
case 2:
printf("\n2nd day is Monday");
break;
case 3:
printf("\n3rd day is Tuesday");
break;
case 4:
printf("\n4th day is Wednesday");
break;
case 5:
printf("\n5th day is Thursday");
break;
case 6:
printf("\n6th day is Friday");
break;
case 7:
printf("\n7th day is Saturday");
break;
default:
printf("\nInvalid choice");
}
getch();
}