Compilare: user.c: In function ‘power’: user.c:39:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:87:14: warning: ‘i’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (text[i + j] != pattern[j]) { ^