Compilare: user.cpp: In function ‘void afisare()’: user.cpp:91:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned int i=0;i<b[z.x];i++){ ^ user.cpp:99:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned int i=0;i<b[z.y];i++){ ^ user.cpp:87:26: warning: unused variable ‘nr’ [-Wunused-variable] piesa z;unsigned int nr; ^ user.cpp: In function ‘int main()’: user.cpp:133:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(unsigned int i=0;i<b[nst];i++){ ^