Compilare: user.cpp: In function ‘void sortare_topologica()’: user.cpp:41: warning: array subscript has type ‘char’ user.cpp:41: warning: comparison between signed and unsigned integer expressions user.cpp:43: warning: array subscript has type ‘char’ user.cpp:44: warning: array subscript has type ‘char’ user.cpp:46: warning: array subscript has type ‘char’ user.cpp: In function ‘void compute_path_length()’: user.cpp:62: warning: array subscript has type ‘char’ user.cpp:62: warning: comparison between signed and unsigned integer expressions user.cpp:64: warning: array subscript has type ‘char’ user.cpp:66: warning: array subscript has type ‘char’ user.cpp:67: warning: array subscript has type ‘char’ user.cpp:69: warning: array subscript has type ‘char’ user.cpp:71: warning: array subscript has type ‘char’ user.cpp:75: warning: array subscript has type ‘char’ user.cpp:76: warning: array subscript has type ‘char’ user.cpp: In function ‘void compute_path()’: user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:98: warning: array subscript has type ‘char’ user.cpp:100: warning: array subscript has type ‘char’ user.cpp:103: warning: array subscript has type ‘char’ user.cpp:105: warning: array subscript has type ‘char’ user.cpp:105: warning: array subscript has type ‘char’ user.cpp: In function ‘int main()’: user.cpp:129: warning: array subscript has type ‘char’ user.cpp:130: warning: array subscript has type ‘char’ user.cpp:131: warning: array subscript has type ‘char’ user.cpp:132: warning: array subscript has type ‘char’ user.cpp:119: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:120: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:122: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:128: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result