Borderou de evaluare (job #74311)

Compilare: user.cpp: In function ‘int main()’: user.cpp:23:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:24:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:26:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int cb(int)’: user.cpp:17:17: warning: ‘v’ may be used uninitialized in this function [-Wuninitialized] user.cpp: In function ‘int main()’: user.cpp:17:17: warning: ‘v’ may be used uninitialized in this function [-Wuninitialized] user.cpp:8:23: note: ‘v’ was declared here