Borderou de evaluare (job #550999)

Compilare: user.cpp: In function ‘int main()’: user.cpp:102:14: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:139:18: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:150:14: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] user.cpp:92:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:93:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:97:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:100:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:138:33: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:148:29: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]