mesaj.cpp:1:20: error: fstream.h: No such file or directory mesaj.cpp:5: error: 'ifstream' does not name a type mesaj.cpp:6: error: 'ofstream' does not name a type mesaj.cpp: In function 'int main()': mesaj.cpp:16: error: 'fin' was not declared in this scope mesaj.cpp:23: warning: comparison between signed and unsigned integer expressions mesaj.cpp:52: error: 'fout' was not declared in this scope mesaj.cpp:54: error: 'fout' was not declared in this scope mesaj.cpp:63: error: 'fout' was not declared in this scope