View Compilation Error

0_0_19330240_32597.cpp: In function 'int main()':
0_0_19330240_32597.cpp:6:5: error: '_int32' was not declared in this scope
     _int32 n;
     ^
0_0_19330240_32597.cpp:10:15: error: 'n' was not declared in this scope
   scanf("%d",&n);
               ^