View Compilation Error

0_0_35793032_27890.cpp: In function 'int main()':
0_0_35793032_27890.cpp:8:3: error: 'a' was not declared in this scope
   a[0][n]=n+1;
   ^
0_0_35793032_27890.cpp:10:3: error: 'a' was not declared in this scope
   a[1][n]=n+2;
   ^
0_0_35793032_27890.cpp:12:3: error: 'a' was not declared in this scope
   a[2][n]=2*n+3;
   ^
0_0_35793032_27890.cpp:13:2: error: 'a' was not declared in this scope
  a[3][0]=5;
  ^