Compilare: user.cpp: In function ‘int main()’: user.cpp:17:9: warning: unused variable ‘corect’ [-Wunused-variable] int n, corect = 0, x; ^ user.cpp:14:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze.in", "r", stdin); ^ user.cpp:15:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paranteze.out", "w", stdout); ^ user.cpp:20:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ user.cpp:17:21: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] int n, corect = 0, x; ^