View Compilation Error

0_0_19052954_24838.cpp: In function 'int main()':
0_0_19052954_24838.cpp:5:5: error: expected initializer before 'scanf'
     scanf("%d", &T);
     ^
0_0_19052954_24838.cpp:8:22: error: 'n' was not declared in this scope
         scanf("%d", &n);
                      ^