View Compilation Error

0_0_23968016_31300.cpp: In function 'int main()':
0_0_23968016_31300.cpp:70:7: error: redeclaration of 'int i'
   int i = 0 , k = 0;
       ^
0_0_23968016_31300.cpp:13:10: note: 'int i' previously declared here
  for(int i = 1; i <= T; i++)
          ^