Compilare: user.cpp: In function ‘void add(char*, int, int)’: user.cpp:27: warning: array subscript has type ‘char’ user.cpp:28: warning: array subscript has type ‘char’ user.cpp:30: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:60: warning: format ‘%s’ expects type ‘char*’, but argument 2 has type ‘char (*)[311]’ user.cpp:72: warning: format ‘%s’ expects type ‘char*’, but argument 2 has type ‘char (*)[311]’ user.cpp:54: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:55: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:57: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:60: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:68: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:72: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result