Compilare: user.cpp: In function ‘int main()’: user.cpp:60:57: warning: variable ‘p1’ set but not used [-Wunused-but-set-variable] int Min1 = 2 * L + 1, Min2 = 2 * L + 1, p1, p2; ^~ user.cpp:60:61: warning: variable ‘p2’ set but not used [-Wunused-but-set-variable] int Min1 = 2 * L + 1, Min2 = 2 * L + 1, p1, p2; ^~ user.cpp:9:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind.in", "r", stdin); ^ user.cpp:10:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("palind.out", "w", stdout); ^ user.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:15:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s + 1); ^ user.cpp:84:13: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(p1 == p2){ ^~ user.cpp:84:13: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:75:17: warning: ‘c’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(s[i] - 'a' == c){ ^~