Compilare: main.cpp: In function 'void creare_euler(int, int)': main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0;p<arb[nod].size();p++){ ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:49:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&m); ^ main.cpp:51:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&points[i]); ^ main.cpp:55:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^ main.cpp:73:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&x,&y); ^ main.cpp:62:27: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized] creare_euler(start, 0); ^