Compilare: main.cpp: In function 'int main()': main.cpp:53:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 1 ; i <= w.size() ; i++){ ~~^~~~~~~~~~~ main.cpp:55:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 1 ; j <= aux.size() ; j++){ ~~^~~~~~~~~~~~~ main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i == w.size()) ~~^~~~~~~~~~~ main.cpp:14:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ main.cpp:16:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&v[i]); ^