Compilare: user.cpp: In function ‘int main()’: user.cpp:43:12: warning: unused variable ‘x’ [-Wunused-variable] int n, i, x, y, r, nr = 0, intervalMax, nrIntervalMax, intervale; ^ user.cpp:43:15: warning: unused variable ‘y’ [-Wunused-variable] int n, i, x, y, r, nr = 0, intervalMax, nrIntervalMax, intervale; ^ user.cpp:43:18: warning: unused variable ‘r’ [-Wunused-variable] int n, i, x, y, r, nr = 0, intervalMax, nrIntervalMax, intervale; ^ user.cpp:46:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:48:45: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &v[i].x, &v[i].y, &v[i].r); ^