View Compilation Error

0_0_36446131_10116.cpp: In function 'int main()':
0_0_36446131_10116.cpp:58:5: error: 'i' was not declared in this scope
   a[i][j]='X';
     ^
0_0_36446131_10116.cpp:58:8: error: 'j' was not declared in this scope
   a[i][j]='X';
        ^