Compilare: main.cpp: In function 'int parse_int()': main.cpp:17:13: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp:29:21: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp:43:17: warning: variable 'num' set but not used [-Wunused-but-set-variable] int num; ^~~ main.cpp: In function 'int main()': main.cpp:77:15: warning: unused variable 'j' [-Wunused-variable] int t, i, j, cmax, st, dr, ccrtsave; ^ main.cpp:75:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("split2.in", "r", stdin); ^ main.cpp:76:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("split2.out", "w", stdout); ^