Eroare de compilare: main.cpp: In function 'int main()': main.cpp:4:5: error: 'ifstream' was not declared in this scope; did you mean 'std::ifstream'? 4 | { ifstream fi("magic2.in"); ofstream fo("magic2.out"); | ^~~~~~~~ | std::ifstream In file included from /usr/include/c++/10/ios:38, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/iosfwd:162:34: note: 'std::ifstream' declared here 162 | typedef basic_ifstream<char> ifstream; | ^~~~~~~~ main.cpp:4:31: error: 'ofstream' was not declared in this scope; did you mean 'std::ofstream'? 4 | { ifstream fi("magic2.in"); ofstream fo("magic2.out"); | ^~~~~~~~ | std::ofstream In file included from /usr/include/c++/10/ios:38, from /usr/include/c++/10/istream:38, from /usr/include/c++/10/fstream:38, from main.cpp:1: /usr/include/c++/10/iosfwd:165:34: note: 'std::ofstream' declared here 165 | typedef basic_ofstream<char> ofstream; | ^~~~~~~~ main.cpp:6:5: error: 'fi' was not declared in this scope; did you mean 'f'? 6 | fi>>n; | ^~ | f main.cpp:28:9: error: 'fo' was not declared in this scope; did you mean 'f'? 28 | fo<<"nu este magic\n"; | ^~ | f main.cpp:37:9: error: 'fo' was not declared in this scope; did you mean 'f'? 37 | fo<<"magic"; | ^~ | f main.cpp:5:41: warning: unused variable 'k' [-Wunused-variable] 5 | int i,j,n,m,l,c,a,b,d[101],e[101],f,k,q; | ^ Non zero exit status: 1