Check out example codes for "how to set an integer equal to the largest integer possible in c++". It will help you in understanding the concepts better.

Code Example 1

2147483647
  unsigned long long int = 18 446 744 073 709 551 615

Code Example 2

// largest int in c++
signed int iMax = (unsigned int)~0 >> 1;
// largest unsigned int
unsigned int uMax = (unsigned int)~0;

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