Compilare: user.c: In function ‘sort’: user.c:22:3: warning: implicit declaration of function ‘strcpy’ [-Wimplicit-function-declaration] strcpy(pivot, dict[(b + e) >> 1]); ^ user.c:22:3: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] user.c:25:5: warning: implicit declaration of function ‘strcmp’ [-Wimplicit-function-declaration] while (strcmp(dict[b], pivot) < 0) { ^ user.c: In function ‘unique’: user.c:50:7: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(dict[count++], dict[i]); ^ user.c: In function ‘main’: user.c:118:7: warning: incompatible implicit declaration of built-in function ‘strcpy’ [enabled by default] strcpy(dict[size++], s[N]); ^