#include <cstdlib>#include <iostream> [[nodiscard]]constexprauto clamp(int value,int min,int max)noexcept{if(value<= min)return min;elseif(max<= value)return max; return value;// won't be executed past 'return' statement std::exit(value);} int main()noexcept{std::cout<< clamp(1,2,4);std::cout<< clamp(3,2,4);std::cout<< clamp(5,2,4); return0;// the value '0' that in main() indicates a success}

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