degrade.cpp: In function 'int main()': degrade.cpp:12: warning: array subscript has type 'char' degrade.cpp:17: warning: array subscript has type 'char' degrade.cpp:21: warning: array subscript has type 'char' degrade.cpp:35: warning: array subscript has type 'char' degrade.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result degrade.cpp:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result degrade.cpp:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result degrade.cpp:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result degrade.cpp:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result