Compilare: user.cpp: In function ‘void mult(int (*)[2], int (*)[2], int (*)[2])’: user.cpp:15:6: warning: unused variable ‘i’ [-Wunused-variable] int i, j, k; ^ user.cpp:15:9: warning: unused variable ‘j’ [-Wunused-variable] int i, j, k; ^ user.cpp:15:12: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k; ^ user.cpp: In function ‘int main()’: user.cpp:49:32: 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:50:35: 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); ^