Compilare: user.c: In function ‘citire_graf’: user.c:36:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ user.c:45:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&a,&b,&c); ^ user.c: In function ‘sift’: user.c:72:9: warning: ‘fiu’ may be used uninitialized in this function [-Wmaybe-uninitialized] int fiu,aux; ^