Compilare: user.cpp: In function ‘bool gaseste(std::vector<int>, int)’: user.cpp:21:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i <= x.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:98:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<badG[i].size();j++) ^ user.cpp:29:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d%d",&m,&n); ^ user.cpp:33:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&l); ^ user.cpp:37:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1,"%d",&x); ^ user.cpp:137:5: warning: ‘nr_sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=1;i<=nr_sol;i++) ^