Compilare: user.cpp: In function ‘void bordam()’: user.cpp:43:10: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘void citesc()’: user.cpp:29:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:34:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &i, &j); ^ user.cpp:37:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d", &ix, &iy, &ox, &oy); ^