Borderou de evaluare (job #237725)

Compilare: user.cpp: In function ‘int main()’: user.cpp:18:9: warning: unused variable ‘r’ [-Wunused-variable] user.cpp:19:9: warning: unused variable ‘n’ [-Wunused-variable] user.cpp:20:15: warning: unused variable ‘lin’ [-Wunused-variable] user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:12:27: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:17:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]