Compilare: user.cpp: In function ‘int main()’: user.cpp:28:24: warning: NULL used in arithmetic [-Wpointer-arith] for(i = 1; s[i] != NULL; ++ i) { ^ user.cpp:12:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.in", "r", stdin); ^ user.cpp:13:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pscpld.out", "w", stdout); ^ user.cpp:17:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", aux + 1); ^ user.cpp:38:18: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(d[pos - (i - pos)] + i >= right) { ^