Borderou de evaluare (job #164649)

Compilare: user.cpp: In function ‘int main()’: user.cpp:24:9: warning: unused variable ‘n’ [-Wunused-variable] user.cpp:24:13: warning: unused variable ‘p’ [-Wunused-variable] user.cpp:24:15: warning: unused variable ‘l’ [-Wunused-variable] user.cpp:22:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:23:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:26:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:31:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp: In function ‘int conv(char)’: user.cpp:12:1: warning: control reaches end of non-void function [-Wreturn-type]