Eroare de compilare: main.cpp: In function 'int main()': main.cpp:7:5: error: 'ifstream' was not declared in this scope ifstream fin ("royfloyd.in"); ^~~~~~~~ main.cpp:7:5: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/iosfwd:162:34: note: 'std::ifstream' typedef basic_ifstream<char> ifstream; ^~~~~~~~ main.cpp:8:5: error: 'ofstream' was not declared in this scope ofstream fout ("royfloyd.out"); ^~~~~~~~ main.cpp:8:5: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/istream:38, from /usr/include/c++/6/sstream:38, from /usr/include/c++/6/complex:45, from /usr/include/c++/6/ccomplex:39, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:52, from main.cpp:1: /usr/include/c++/6/iosfwd:165:34: note: 'std::ofstream' typedef basic_ofstream<char> ofstream; ^~~~~~~~ main.cpp:9:5: error: 'fin' was not declared in this scope fin>>n; ^~~ main.cpp:38:13: error: 'fout' was not declared in this scope fout<<g[i][j]<<"\n"; ^~~~ main.cpp:40:9: error: 'fout' was not declared in this scope fout<<"\n"; ^~~~ Non zero exit status: 1