View Compilation Error

0_0_13215814_12415.cpp: In function 'int main()':
0_0_13215814_12415.cpp:7:20: error: 'n' was not declared in this scope
     int t;  cin >> n;
                    ^
0_0_13215814_12415.cpp:9:21: error: expected initializer before '>>' token
         int t,  cin >> t;
                     ^