تكفووووووووووون ساعدوني ببرامج c++

[مجوؤوؤوؤدي]

السلام عليكم
الله يسعدكم محتااااااااااااجه مبرمجين يساعدوني بحل هالتمارين والله ببكي واجب وبكرا تسليمو
وحاولت احلو ماعرفت
تكفون ساعدوني
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3) Write and run a program that reads a positive integer number from the
user, and then determines whether it consists of one, two, or three digits.
Output Examples:
Enter a number: 578
578 consists of three digits
Enter three-digits number: 45

45 consists of two digits
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8) Write a program that estimates the value of the mathematical constant e by

using the formula

#=1+1/11+2/21+3/31

:

Prompt the user for the desired accuracy of e (i.e., the number of terms in the
summation).