Compilare: main.cpp: In function 'int main()': main.cpp:99:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<ans.size()-1;i++) ~^~~~~~~~~~~~~ main.cpp:84:9: warning: unused variable 't' [-Wunused-variable] int t,i,j; ^ main.cpp:84:13: warning: unused variable 'j' [-Wunused-variable] int t,i,j; ^ main.cpp: In member function 'char Parser::getChar()': main.cpp:16:48: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(str, sizeof(char), SIZE, fin); ^