Compilare: user.cpp: In member function ‘void matrice::unitate()’: user.cpp:20:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=dim;i++) v[i][i]=1; ^ user.cpp: In member function ‘matrice matrice::operator*(const matrice&) const’: user.cpp:25:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=dim;i++) ^ user.cpp:26:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=dim;j++) ^ user.cpp:27:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=1;k<=dim;k++) ^ user.cpp: In function ‘int main()’: user.cpp:49:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<t;i++) ^