Compilare: user.c: In function ‘main’: user.c:54:13: warning: unused variable ‘i’ [-Wunused-variable] int a,b,i,prim1,prim2 = 0; ^ user.c: In function ‘citire’: user.c:6:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",a,b); ^ user.c: In function ‘main’: user.c:55:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("difprim.in","r",stdin); ^ user.c:56:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("difprim.out","w",stdout); ^ user.c: In function ‘afisare’: user.c:40:24: warning: ‘prevPrim’ may be used uninitialized in this function [-Wmaybe-uninitialized] *prim1 = prevPrim; ^