Eroare de compilare: user.cpp:1:20: error: fsream.h: No such file or directory user.cpp:6:12: error: invalid suffix "n" on integer constant user.cpp:24:2: warning: no newline at end of file user.cpp: In function 'int S(int)': user.cpp:6: error: 'n' cannot be used as a function user.cpp: In function 'int main()': user.cpp:12: error: 'ifstream' was not declared in this scope user.cpp:12: error: expected `;' before 'f' user.cpp:13: error: 'ofstream' was not declared in this scope user.cpp:13: error: expected `;' before 'g' user.cpp:14: error: 'f' was not declared in this scope user.cpp:18: error: 'g' was not declared in this scope user.cpp:21: error: 'g' was not declared in this scope