C program to print day of week name using switch case

Write a C program to enter week number(1-7) and print day of week name using switch case. C program to find week day name using switch case. Logic to find day name of week using switch case in C program.

Input week number(1-7): 2

Tuesday

Required knowledge

Basic programming, Switch case

Logic to print day name of week using switch case

Below is the step by step descriptive logic to print day name of week.

1. Read day number from user, store it in some variable say week.
2. Switch the value of week and match with cases.
3. For case 1 print "MONDAY", for case 2 print "TUESDAY" and so on. Print "SUNDAY" for case 7.
4. For default case print Invalid week number.

Let us code the solution for the given program.

Program to print day name of week using switch case

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

#include <stdio.h>

int main()
{
    int week;
    
    /*
     * Read 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;
}

Enter week number(1-7): 1
MONDAY

Happy coding ;)