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C Exercises: Accept day number and display its equivalent day name in the word

C Conditional Statement: Exercise-21 with Solution

Write a program in C to read any day number in integer and display day name in the word.

Pictorial Presentation:

Accept day number and display its equivalent day name in the word

Sample Solution:

C Code:

#include <stdio.h>
void main()
{
   int dayno;
   printf("Input Day No : ");
   scanf("%d",&dayno);
   switch(dayno)
   {
	case 1:
	       printf("Monday \n");
	       break;
	case 2:
	       printf("Tuesday \n");
	       break;
	case 3:
	       printf("Wednesday \n");
	       break;
	case 4:
	       printf("Thursday \n");
	       break;
	case 5:
	       printf("Friday \n");
	       break;
	case 6:
	       printf("Saturday \n");
	       break;
	case 7:
	       printf("Sunday  \n");
	       break;
	default:
	       printf("Invalid day number. \nPlease try again ....\n");
	       break;
      }
}

Sample Output:

Input Day No : 4                                                                                              
Thursday 

Flowchart:

Flowchart: Accept day number and display its equivalent day name in word

C Programming Code Editor:

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C Programming: Tips of the Day

Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?

It is a quirk of the syntax for passing arrays to functions.

Actually it is not possible to pass an array in C. If you write syntax that looks like it should pass the array, what actually happens is that a pointer to the first element of the array is passed instead.

Since the pointer does not include any length information, the contents of your [] in the function formal parameter list are actually ignored.

Ref : https://bit.ly/3fhlvdH