Compilare: user.cpp: In function ‘void df_frunze(int, int)’: user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void df(int, int)’: user.cpp:38: warning: comparison between signed and unsigned integer expressions user.cpp:46: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void sortare()’: user.cpp:55: warning: comparison between signed and unsigned integer expressions user.cpp:59: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void df_sol(int, int)’: user.cpp:74: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int dist(int, int)’: user.cpp:88: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:119: warning: comparison between signed and unsigned integer expressions user.cpp:136: warning: suggest explicit braces to avoid ambiguous ‘else’ user.cpp:98: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:99: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:100: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:102: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:104: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:106: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result