C program to print day of week name using switch case

Example
Input

Input week number(1-7): 2

Output

Tuesday

Logic to print day of week name using switch...case

Step by step descriptive logic to print day name of week.

1. Input day number from user. Store it in some variable say week.
2. Switch the value of week i.e. use switch(week) and match with cases.
3. There can be 7 possible values(choices) of week i.e. 1 to 7. Therefore write 7 case inside switch. In addition, add default case as an else block.
4. For case 1: print “MONDAY”, for case 2: print “TUESDAY” and so on. Print “SUNDAY” for case 7:.
5. If any case does not matches then, for default: case print “Invalid week number”.

/**
 * C program to print day of week using switch case
 */

#include <stdio.h>

int main()
{
    int week;
    
    /* Input week number from user */
    printf("Enter week number(1-7): ");
    scanf("%d", &week);
    
    switch(week)
    {
        case 1: 
            printf("Monday");
            break;
        case 2: 
            printf("Tuesday");
            break;
        case 3: 
            printf("Wednesday");
            break;
        case 4: 
            printf("Thursday");
            break;
        case 5: 
            printf("Friday");
            break;
        case 6: 
            printf("Saturday");
            break;
        case 7: 
            printf("Sunday");
            break;
        default: 
            printf("Invalid input! Please enter week number between 1-7.");
    }

    return 0;
}

/*
Output :

Enter week number(1-7): 1
Monday
*/