C++ program to check if an integer is a Fascinating Number or not

C++ program to check if an integer is a Fascinating Number or not

0:50 What is a fascinating number?
2:58 C++ code to check for fascinating number

Q: What is a fascinating number?
A: An integer n (of at least 3 digits) is a fascinating number if the concatenation of the integers (n + 2n + 3n) contains all digits 1-9 exactly once. Number of 0s do not matter.
2n is the value of (2 x n), 3n is the value of (3 x n)

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