Compilare: user.cpp: In function ‘void bfss(int)’: user.cpp:23:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ^ user.cpp: In function ‘void bfsf(int)’: user.cpp:43:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:57:26: warning: unused variable ‘nod’ [-Wunused-variable] int m,nods,nodf,i,cate,nod,n1,n2,l; ^ user.cpp:58:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d",&n,&m,&nods,&nodf); ^ user.cpp:60:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&n1,&n2); ^