View Compilation Error

0_0_26582134_12801.cpp: In function 'int main()':
0_0_26582134_12801.cpp:11:21: error: lvalue required as left operand of assignment
         abs(a[0][0])=max;
                     ^
0_0_26582134_12801.cpp:19:25: error: lvalue required as left operand of assignment
             abs(a[i][j])=max;
                         ^
0_0_26582134_12801.cpp:21:13: error: 'j' was not declared in this scope
             j=y;
             ^