View Compilation Error

0_0_16027019_21025.c: In function 'main':
0_0_16027019_21025.c:6:29: error: 'EOF' undeclared (first use in this function)
     while((scanf("%d",&n))!=EOF)
                             ^
0_0_16027019_21025.c:6:29: note: each undeclared identifier is reported only once for each function it appears in