Write a C program to find the day of the week based on an input number using a switch statement

This C program takes a number input from the user and displays the corresponding day of the week. The program uses a switch statement, which is an efficient way to handle multiple conditions based on a single variable—in this case, the input number.

The switch statement works by checking the value of day and jumping directly to the correct case, making it an efficient way to handle multiple conditions based on a single value.

#include <stdio.h>

int main() {
    int day;
    printf("Enter day number (1 to 7): ");
    scanf("%d", &day);

    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 day number\n");
    }
    return 0;
}

Output:

Enter day number (1 to 7): 7
Sunday