Compilare: user.cpp: In function ‘void citire()’: user.cpp:36:11: warning: unused variable ‘cost’ [-Wunused-variable] int i,z,y,cost; ^ user.cpp: In function ‘void init()’: user.cpp:56:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<G[vfs].size();i++) ^ user.cpp: In function ‘void prim()’: user.cpp:76:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<G[vfmin].size();i++) ^ user.cpp: In function ‘void citire()’: user.cpp:38:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d",&n,&m); ^ user.cpp:41:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d",&z,&y,&v.c); ^