Compilare: user.cpp: In function ‘void elimin()’: user.cpp:69: warning: statement has no effect user.cpp:73: warning: statement has no effect user.cpp:79: warning: statement has no effect user.cpp: In function ‘void Dijkstra()’: user.cpp:90: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:126: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result