Compilare: user.cpp: In function ‘int printM()’: user.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int solve()’: user.cpp:114:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int pow(int (*)[4], int)’: user.cpp:80:1: warning: control reaches end of non-void function [-Wreturn-type] } ^