Compilare: user.cpp: In function ‘void Bellman_Ford()’: user.cpp:16:9: warning: unused variable ‘vec’ [-Wunused-variable] int vec,nod,i,el; ^~~ user.cpp: In function ‘int main()’: user.cpp:59:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&n,&m,&nr); ^ user.cpp:63:65: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&x),coada.push(mp(x,x)),fort[x]=1,drm[x]=0; ^ user.cpp:66:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&x,&y,&c); ^