View Compilation Error

0_0_36388040_18786.cpp: In function 'int main()':
0_0_36388040_18786.cpp:5:8: error: conflicting declaration 'int x'
  int t,x;
        ^
0_0_36388040_18786.cpp:4:11: note: previous declaration as 'double x'
  double n,x;
           ^