View Compilation Error

0_0_25898552_2911.cpp:4:1: error: expected ',' or ';' before 'long'
 long long a[3][3];
 ^
0_0_25898552_2911.cpp: In function 'void Pow(long long int (*)[3], long long int)':
0_0_25898552_2911.cpp:43:10: error: 'a' was not declared in this scope
    mul(b,a);
          ^
0_0_25898552_2911.cpp:45:10: error: 'a' was not declared in this scope
      mul(a,a);
          ^
0_0_25898552_2911.cpp: In function 'int main()':
0_0_25898552_2911.cpp:61:4: error: 'a' was not declared in this scope
    a[k][j]=0;
    ^
0_0_25898552_2911.cpp:62:6: error: 'a' was not declared in this scope
      a[0][0]=D,a[0][1]=1;
      ^