Borderou de evaluare (job #271121)

Compilare: user.cpp: In function ‘int main()’: user.cpp:9:15: warning: unused variable ‘i2’ [-Wunused-variable] user.cpp:9:20: warning: unused variable ‘nr’ [-Wunused-variable] user.cpp:10:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:14:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:31:4: warning: ‘c’ may be used uninitialized in this function [-Wuninitialized]