View Compilation Error

In file included from 0_0_26724682_29332.cpp:1:0:
0_0_26724682_29332.cpp: In function 'int main()':
0_0_26724682_29332.cpp:7:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
     while (gets(a)!=EOF))
                     ^
0_0_26724682_29332.cpp:7:25: error: expected primary-expression before ')' token
     while (gets(a)!=EOF))
                         ^