Project: Math Constants
Write a program that prints the values for π, 𝑒 φ (Golden Ratio) and ln 2. Use named constants for all three values.
Output
$ g++ -std=c++17 MathConstants.cpp -o MathConstants -lfmt
$ ./MathConstants
π: 3.141592653589793
ℯ: 2.718281828459045
φ: 1.618033988749895
ln2: 0.693147180559945