Compilare: user.cpp: In function ‘int pickNeighbour(int)’: user.cpp:43:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < g [ aux ] . size() ; i ++ ) ^ user.cpp: In function ‘void printTour()’: user.cpp:62:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < tour.size() - 1 ; i ++ ) ^ user.cpp: In function ‘void read()’: user.cpp:15:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( in , "%d %d\n" , &vSize , &eSize ); ^ user.cpp:18:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf ( in , "%d %d\n" , &x , &y ); ^