View Compilation Error

In file included from 0_0_36672577_23179.cpp:1:0:
0_0_36672577_23179.cpp: In function 'int main()':
0_0_36672577_23179.cpp:4:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
 while(scanf("%d",&a!=EOF)){
                      ^