8.Create a C program to determine the day of the week based on the input number using switch-case.

Objective:
The objective of this program is to take an input number representing a day of the week (1 for Sunday, 2 for Monday, and so on) and use a switch-case statement in C to determine and display the corresponding day of the week.
Agenda:
1. Define the input variable to represent the day of the week.
2. Use a switch-case statement to determine the day of the week based on the input number.
3. Display the corresponding day of the week as output.
Purpose:
The purpose of this program is to demonstrate the use of switch-case statements in C programming to determine specific outcomes based on different input values. It also serves as a simple example of conditional logic in programming.
Real-Life Applications:
Switch-case statements are commonly used in programming for decision-making based on multiple conditions. In real-life applications, this type of logic can be found in various scenarios such as menu selection in user interfaces, handling different cases in algorithms, and processing different types of input data.
write a C program to determine the day of the week based on the input number using switch-case.

/* a program in C to cdetermine the day of the week
based on the input number using switch-case. */
#include <stdio.h>
int main()
{
int dayNumber;
printf("Enter a number (1-7) to determine the day of the week: ");
scanf("%d", &dayNumber);
switch (dayNumber) {
case 1:
printf("Sunday\n");
break;
case 2:
printf("Monday\n");
break;
case 3:
printf("Tuesday\n");
break;
case 4:
printf("Wednesday\n");
break;
case 5:
printf("Thursday\n");
break;
case 6:
printf("Friday\n");
break;
case 7:
printf("Saturday\n");
break;
default:
printf("Invalid input\n");
}
return 0;
}

Output:
Enter a number (1-7) to determine the day of the week:
2
Monday

a C program to a determine the day of the week based on the input number using switch-case.

Explanation
1. Define the input variable:
In the C program, you would start by declaring a variable to store the input number representing the day of the week. For example:
int dayNumber;
2. Use a switch-case statement:
Next, you would use a switch-case statement to determine the day of the week based on the input number. The switch-case statement allows you to compare the input value against different cases and execute the corresponding code block.
Here's an example of how you can implement this in C:
switch (dayNumber) {
case 1:
printf("Sunday\n");
break;
case 2:
printf("Monday\n");
break;
case 3:
printf("Tuesday\n");
.
.
.
break;
default:
printf("Invalid input\n");
}
3. Display the output:
After the switch-case statement, you would prompt the user to enter the day number and then display the corresponding day of the week based on the input.

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