View Compilation Error

0_0_33567700_11554.cpp: In function 'int main()':
0_0_33567700_11554.cpp:26:13: error: 'd' was not declared in this scope
             d[i][0]=0;
             ^
0_0_33567700_11554.cpp:28:13: error: 'd' was not declared in this scope
             d[0][j]=0;
             ^