graf.cpp: In function 'void citire()': graf.cpp:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result graf.cpp:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result graf.cpp: In function 'void bfs(int, int*)': graf.cpp:35: warning: comparison between signed and unsigned integer expressions graf.cpp: In function 'int main()': graf.cpp:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result graf.cpp:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result