https://rentry.org/PPP2_p99a

// Code derived from Stroustrup's PPP2 book
// § 4.3.3 Conversions
// -beginning on p 99

#include <iostream>

using std::cout;

int main() {
  // 5/2 is 2 (not 2.5)
  cout << (5 / 2) << '\n';

  // 2.5/2 means 2.5/double(2), that is, 1.25
  cout << (2.5 / 2) << '\n';

  // 'a'+1 means int{'a'}+1
  cout << ('a' + 1) << '\n';
}

build & run:

g++ -std=c++20 -O2 -Wall -pedantic ./ch_04/main_p99a.cpp && ./a.out

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Pub: 23 Jan 2023 09:40 UTC
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