Compilare: user.cpp: In function ‘void write()’: user.cpp:32:11: warning: variable ‘cur’ set but not used [-Wunused-but-set-variable] Point cur = I[j]; ^ user.cpp: In function ‘void read()’: user.cpp:22:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &N, &M, &noI); ^ user.cpp:25:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &I[i].x, &I[i].y); ^