Compilare: user.cpp: In function ‘void rec(char)’: user.cpp:7: warning: array subscript has type ‘char’ user.cpp:8: warning: array subscript has type ‘char’ user.cpp:13: warning: array subscript has type ‘char’ user.cpp:20: warning: array subscript has type ‘char’ user.cpp:24: warning: array subscript has type ‘char’ user.cpp:27: warning: array subscript has type ‘char’ user.cpp:35: warning: array subscript has type ‘char’ user.cpp:37: warning: array subscript has type ‘char’ user.cpp:39: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:50: warning: format ‘%d’ expects type ‘int*’, but argument 2 has type ‘char*’ user.cpp:47: warning: unused variable ‘ch’ user.cpp:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result