Compilare: user.cpp: In function ‘void temp_suffix_build()’: user.cpp:21:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=1;k[i]!=NULL;i++) ^ user.cpp:20:9: warning: unused variable ‘i’ [-Wunused-variable] int i=1,j=0; ^ user.cpp: In function ‘void searcha()’: user.cpp:41:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=0;s[i]!=NULL;i++) ^ user.cpp:39:9: warning: unused variable ‘i’ [-Wunused-variable] int i=0,j=0; ^