Write a factorial code in visual studio.

product = 1 * 2 * 3 . * N

In your program, define the variable product as of type double. The product of the first N integers is also known as the factorial of N. Use the built-in function FACT in Excel to verify that your program indeeds finds the correct value of the factorial of N.

Through trial and error, find out the maximum value of N that your program correctly computes. Include that threshold value of N in the message to the user asking for a value of N.

As part of the input validation checks, ensure that the number N entered by the user is a positive integer greater than or equal to 0 and less than or equal to the maximum threshold value for N. Also, ensure that your program does not crash if the user enters non-numeric characters at the console. Print on the console a suitable message for an invalid value of N.

Valid input values of N are: 0 (the factorial of 0 is 1, hence 0 is actually a valid value of N) Any positive integer greater than 0 such as 45 but less than or equal to the maximum threshold of correct operation of the program.

Invalid input values of N are: Any negative number such as -20 Any number with a decimal such as 78.4 Anything that has non-numeric characters such as 272eft& Any positive integer that exceeds the threshold within which the program works correctly.

The error message that your program prints out should not be a generic error message but should identify the type of error that the user made. For example, if the user entered a negative number, then the error message printed on the console should be:

Error: Negative numbers are not valid values for N

As another example, if the user entered a number that exceeds the maximum threshold within which the program works correctly, then error message should be: Error: A number larger than ___ is not a valid value of N (of course, here you have to supply the largest permissible value of N in the error message) So check for all erroneous input values and provide suitable error messages.