Borderou de evaluare (job #87211)

Compilare: user.cpp: In function ‘int main()’: user.cpp:91:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In member function ‘void myIfstream::advance()’: user.cpp:25:47: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int main()’: user.cpp:112:19: warning: ‘ans’ may be used uninitialized in this function [-Wuninitialized]