View Compilation Error

In file included from 0_0_35016626_12369.cpp:1:0:
0_0_35016626_12369.cpp: In function 'int main()':
0_0_35016626_12369.cpp:8:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
     while(gets(ch)!=EOF)
                     ^