Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:31:14: error: ‘j’ was not declared in this scope a[i][j] = aux; ^ user.cpp:31:19: error: ‘aux’ was not declared in this scope a[i][j] = aux; ^ user.cpp:9:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fold.in", "r", stdin); ^ user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fold.out", "w", stdout); ^