Compilare: user.cpp: In function ‘int main()’: user.cpp:42:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<G[vf].size() && !ciclic; ++i) { ^ user.cpp: In function ‘void citire()’: user.cpp:21:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin, "%d%d", &n, &m); st=1; ^ user.cpp:22:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=0; i<m; i++) { fscanf (fin, "%d%d%d", &x, &crt.vf, &crt.c); G[x].push_back(crt); } ^