Compilare: user.cpp: In function ‘void citire()’: user.cpp:28:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] s[n+1]=NULL; ^ user.cpp:29:11: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] k[m+1]=NULL; ^ user.cpp: In function ‘void temp_suffix_build()’: user.cpp:35:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=2;k[i]!=NULL;i++) ^ user.cpp: In function ‘void searcha()’: user.cpp:55:23: warning: NULL used in arithmetic [-Wpointer-arith] for(int i=1;s[i]!=NULL;i++) ^ user.cpp:53:9: warning: unused variable ‘i’ [-Wunused-variable] int i=0,j=0; ^