Compilare: main.cpp: In function 'void creare_euler(int, int)': main.cpp:20:18: 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:48:30: 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:50:36: 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:52:34: 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:66:34: 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:74:57: warning: 'ymax' may be used uninitialized in this function [-Wmaybe-uninitialized] else if(ans == maxim && (x < xmax || (x == xmax && y < ymax))) ~~~~~~~~~~~^~~~~~~~~~~~ main.cpp:74:43: warning: 'xmax' may be used uninitialized in this function [-Wmaybe-uninitialized] else if(ans == maxim && (x < xmax || (x == xmax && y < ymax))) ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~