Borderou de evaluare (job #10257)

Compilare: user.cpp: In function ‘int main()’: user.cpp:4:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:7:12: warning: ‘c’ is used uninitialized in this function [-Wuninitialized] user.cpp:7:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] user.cpp:7:5: warning: ‘i’ may be used uninitialized in this function [-Wuninitialized]