Compilare: main.cpp: In constructor 'matrixExponentiation::matrixExponentiation()': main.cpp:41:10: warning: 'matrixExponentiation::created' will be initialized after [-Wreorder] bool created; ^~~~~~~ main.cpp:40:10: warning: 'unsigned int matrixExponentiation::n' [-Wreorder] uint n; ^ main.cpp:44:5: warning: when initialized here [-Wreorder] matrixExponentiation(): created(false), n(0) {} ^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:83:33: 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); ^ main.cpp:84:35: 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); ^