View Compilation Error

0_0_19397272_23164.cpp: In function 'int main()':
0_0_19397272_23164.cpp:8:18: error: 'i' was not declared in this scope
     long long dp[i];
                  ^
0_0_19397272_23164.cpp:13:9: error: 'dp' was not declared in this scope
         dp[0]=a[0];t=a[0];
         ^