Compilare: user.cpp: In function ‘void df_critice(int)’: user.cpp:20: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void df(int, int)’: user.cpp:55: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void biconexe()’: user.cpp:65: warning: unused variable ‘j’ user.cpp: In function ‘void df_euler(int, int, int)’: user.cpp:94: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void df_solve(int, int, double)’: user.cpp:140: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:174: warning: comparison between signed and unsigned integer expressions user.cpp:181: warning: comparison between signed and unsigned integer expressions user.cpp:149: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:150: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:151: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:155: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:165: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:167: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result