Compilare: user.cpp: In function ‘void citire()’: user.cpp:13:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n*n;++i){ ^ user.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n*n;++i){ ^ user.cpp: In function ‘int radacina(unsigned int)’: user.cpp:24:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(;r!=t[r];r=t[r]); ^ user.cpp: In function ‘int main()’: user.cpp:80:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n*n;++i) ^