Compilare: user.cpp: In function ‘int main()’: user.cpp:171:19: warning: unused variable ‘nr’ [-Wunused-variable] long long nr; ^~ user.cpp: In function ‘char read_ch()’: user.cpp:22:35: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(_in_buff, 1, 4096, _fin); ^ user.cpp: In function ‘int main()’: user.cpp:129:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fotbal3.out", "w", stdout); ^