Compilare: user.cpp: In function ‘mat putLog(mat, int)’: user.cpp:32:20: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(put & 1 == 0) ~~^~~~ user.cpp: In function ‘void rez()’: user.cpp:49:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ user.cpp: In function ‘int main()’: user.cpp:68:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kfib.in", "r", stdin); ^ user.cpp:69:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kfib.out", "w", stdout); ^