Compilare: main.cpp: In function 'int parse_int()': main.cpp:15:13: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp:27:21: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp:41:17: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp: In function 'int main()': main.cpp:69:18: warning: unused variable 'j' [-Wunused-variable] int n, m, i, j, k, p, q, powk; ^ main.cpp:69:30: warning: variable 'powk' set but not used [-Wunused-but-set-variable] int n, m, i, j, k, p, q, powk; ^~~~ main.cpp:66:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.in", "r", stdin); ^ main.cpp:67:41: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("stramosi.out", "w", stdout); ^