Compilare: user.cpp: In function ‘int main()’: user.cpp:39:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(eq) ^ user.cpp:23:9: warning: unused variable ‘l2’ [-Wunused-variable] int l2 = strlen(s2); ^ user.cpp:25:9: warning: unused variable ‘mid’ [-Wunused-variable] int mid = l1/2; ^