Eroare de compilare: main.cpp:7:14: error: 'string_view' is not a member of 'std' 7 | solve1 (std::string_view s) { | ^~~~~~~~~~~ main.cpp:7:14: note: 'std::string_view' is only available from C++17 onwards main.cpp:12:14: error: 'string_view' is not a member of 'std' 12 | solve2 (std::string_view s) { | ^~~~~~~~~~~ main.cpp:12:14: note: 'std::string_view' is only available from C++17 onwards main.cpp:31:14: error: 'string_view' is not a member of 'std' 31 | solve3 (std::string_view s) { | ^~~~~~~~~~~ main.cpp:31:14: note: 'std::string_view' is only available from C++17 onwards main.cpp: In function 'int main()': main.cpp:76:22: error: 'solve1' cannot be used as a function 76 | f << solve1(s); | ^ main.cpp:78:22: error: 'solve2' cannot be used as a function 78 | f << solve2(s); | ^ main.cpp:80:22: error: 'solve3' cannot be used as a function 80 | f << solve3(s); | ^ Non zero exit status: 1