Compilare: main.cpp: In function 'int main()': main.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<dt[wh].size();++j) ~^~~~~~~~~~~~~~ main.cpp:44:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<dt[wh].size(); ++j) ~^~~~~~~~~~~~~~ main.cpp:54:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<dt[wh].size(); ++j) ~^~~~~~~~~~~~~~ main.cpp:17:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s\n",s); ^ main.cpp:21:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s\n",p); ^