Compilare: user.cpp: In function ‘void read()’: user.cpp:12:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%i%i", &n, &m); ^ user.cpp:13:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 0; i < n; i++) fscanf(f, "%i", &input1[i]); ^ user.cpp:14:60: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (int i = 0; i < m; i++) fscanf(f, "%i", &input2[i]); ^