View Compilation Error

0_0_36223786_17222.cpp: In function 'int LCS()':
0_0_36223786_17222.cpp:13:17: error: 'd' was not declared in this scope
                 d[i][j]=dp[i-1][j-1];
                 ^
0_0_36223786_17222.cpp: In function 'int main()':
0_0_36223786_17222.cpp:18:26: error: 'whilr' was not declared in this scope
     whilr(cin>>str1>>str2)
                          ^