Compilare: user.cpp: In function ‘void adauga(int, int)’: user.cpp:17:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(s)-1) t[x].nr++; ^ user.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(s)-1) t[nodes].nr++; ^ user.cpp: In function ‘void sterge(int, int)’: user.cpp:46:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(s)-1) {t[x].nr--; verif(t[x].nod);} ^ user.cpp: In function ‘void answare(int, int)’: user.cpp:58:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(s)-1) cout<<t[x].nr<<"\n"; ^ user.cpp: In function ‘void answare_again(int, int)’: user.cpp:72:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==strlen(s)-1) return; ^