Borderou de evaluare (job #298779)

Compilare: user.cpp: In function 'int main()': user.cpp:19:21: warning: unused variable 'ma' [-Wunused-variable] user.cpp:19:32: warning: unused variable 'sum' [-Wunused-variable] user.cpp:19:38: warning: unused variable 'j' [-Wunused-variable] user.cpp:17:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:18:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:21:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:25:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:49:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] user.cpp:35:23: warning: 'i' may be used uninitialized in this function [-Wuninitialized]