Compilare: user.cpp: In function ‘void readFile()’: user.cpp:98:21: warning: unused variable ‘test’ [-Wunused-variable] long long i, j, test; ^ user.cpp:96:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &t); ^ user.cpp:106:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &n); ^ user.cpp:113:54: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%lld", &v[j])/*, sum += v[j]*/; ^