Borderou de evaluare (job #67776)

Compilare: user.cpp: In function ‘int main()’: user.cpp:6:7: warning: unused variable ‘fin’ [-Wunused-variable] user.cpp:9:6: warning: unused variable ‘n’ [-Wunused-variable] user.cpp:7:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:8:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:17:8: warning: ‘x’ is used uninitialized in this function [-Wuninitialized] user.cpp:20:39: warning: ‘fout’ is used uninitialized in this function [-Wuninitialized] user.cpp:20:39: warning: ‘suma’ is used uninitialized in this function [-Wuninitialized] user.cpp:19:8: warning: ‘a’ may be used uninitialized in this function [-Wuninitialized]