View Compilation Error

0_0_38748972_4868.cpp: In function 'int main()':
0_0_38748972_4868.cpp:15:25: error: 'in' was not declared in this scope; did you mean 'n'?
   15 |                     for(in                        t i=1;i<=n;i++)scanf("%d",&a[i]);
      |                         ^~
      |                         n
0_0_38748972_4868.cpp:15:57: error: 'i' was not declared in this scope
   15 |                     for(in                        t i=1;i<=n;i++)scanf("%d",&a[i]);
      |                                                         ^