View Compilation Error

0_0_19966834_10725.cpp:3:8: error: 'i' does not name a type
 static i;
        ^
0_0_19966834_10725.cpp: In function 'int c(int, int)':
0_0_19966834_10725.cpp:8:11: error: 'i' was not declared in this scope
   return (i*c(a,--b))%1000;
           ^
0_0_19966834_10725.cpp:10:10: error: 'i' was not declared in this scope
   return i;
          ^
0_0_19966834_10725.cpp: In function 'int main()':
0_0_19966834_10725.cpp:19:3: error: 'i' was not declared in this scope
   i=a;
   ^