Borderou de evaluare (job #67791)

Compilare: user.cpp: In function ‘int main()’: user.cpp:5:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:6:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:9:5: warning: ‘n’ is used uninitialized in this function [-Wuninitialized] user.cpp:10:1: warning: ‘k’ is used uninitialized in this function [-Wuninitialized] user.cpp:16:6: warning: ‘cn2’ is used uninitialized in this function [-Wuninitialized]