Compilare: main.cpp: In function 'void constr_vect_temp()': main.cpp:14:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=2;z[i]!=NULL;i++) ^~~~ main.cpp:16:9: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while(z[j+1]!=z[i]&&j) ^~~~~ main.cpp:18:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' if(z[j+1]==z[i]) ^~ main.cpp: In function 'void cauta()': main.cpp:27:24: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=1;s[i]!=NULL;i++) ^~~~ main.cpp: In function 'int main()': main.cpp:55:9: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] s[n+1]=NULL; ^~~~ main.cpp:56:10: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] z[n+1]=NULL; ^~~~