View Compilation Error

0_0_38142204_11768.cpp: In function 'int main()':
0_0_38142204_11768.cpp:113:23: error: 'eps' was not declared in this scope
   if (fabs(a[0][n]) < eps) a[0][n] = 0;  // 去掉输出 -0.00 的情况
                       ^