View Compilation Error

0_0_33272709_28830.cpp: In function 'int main()':
0_0_33272709_28830.cpp:19:2: error: expected initializer before 'scanf'
  scanf("%d",&t);
  ^
0_0_33272709_28830.cpp:20:8: error: 't' was not declared in this scope
  while(t--)
        ^