Borderou de evaluare (job #285688)

Compilare: user.cpp: In function 'int main()': user.cpp:10:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:31:26: warning: 'prima_cifra' may be used uninitialized in this function [-Wuninitialized]