View Compilation Error

0_0_27560819_1978.cpp: In function 'int main()':
0_0_27560819_1978.cpp:4:2: error: '_int64' was not declared in this scope
  _int64 f[50],n,i,f[0]=0,f[1]=1;
  ^
0_0_27560819_1978.cpp:5:13: error: expected ')' before '~' token
  while(scanf~("%d",&n)!=EOF&&n!=-1)
             ^
0_0_27560819_1978.cpp:5:21: error: 'n' was not declared in this scope
  while(scanf~("%d",&n)!=EOF&&n!=-1)
                     ^