C Program to Implement a Simple Switch Statement to Check the Day of the Week

This C program uses a simple switch statement to check the day of the week based on the user's input. The program prompts the user to enter a number between 1 and 7, where 1 represents Monday and 7 represents Sunday.

Code Implementation

// C Program to Implement a Simple Switch Statement to Check the Day of the Week

#include <stdio.h>

int main() {
    int day;

    // Prompt the user to enter a number between 1 and 7
    printf("Enter a number between 1 and 7: ");
    scanf("%d", &day);

    // Use a switch statement to check the day of the week
    switch (day) {
        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 input. Please enter a number between 1 and 7.\n");
            break;
    }

    return 0;
}

How the Program Works

The program uses a switch statement to check the value of the variable "day" and prints the corresponding day of the week. If the user enters a number outside the range of 1 to 7, the program prints an error message.

Example Output

Enter a number between 1 and 7: 3

Wednesday

Example Output (Invalid Input)

Enter a number between 1 and 7: 8

Invalid input. Please enter a number between 1 and 7.

Advantages of Using a Switch Statement

The switch statement provides a concise and efficient way to handle multiple cases based on a single variable. It eliminates the need for multiple if-else statements, making the code easier to read and maintain.

Best Practices for Using Switch Statements

When using switch statements, it's essential to include a default case to handle unexpected values. This ensures that the program behaves predictably and provides useful feedback to the user.

Conclusion

In conclusion, the switch statement is a powerful tool for handling multiple cases based on a single variable. By using a switch statement, you can write more efficient and readable code that is easier to maintain and debug.

FAQs

Q: What is the purpose of the default case in a switch statement?

A: The default case handles unexpected values and provides a way to handle errors or invalid input.

Q: Can I use a switch statement with non-integer values?

A: No, switch statements can only be used with integer values, including characters and enumerations.

Q: How do I handle multiple cases with the same action in a switch statement?

A: You can use a single case label and separate the values with commas, or use a range of values using the case label with a colon.