Compilare: user.cpp: In function ‘int main()’: user.cpp:55:9: warning: unused variable ‘ct’ [-Wunused-variable] int ct = 0, maxim2 = -1, nr, nr2; ^ user.cpp:55:34: warning: unused variable ‘nr2’ [-Wunused-variable] int ct = 0, maxim2 = -1, nr, nr2; ^ user.cpp:47:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d", &n); ^ user.cpp:50:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in, "%d%d", &x[i], &y[i]); ^