View Compilation Error

0_0_38276577_19186.cpp: In function 'matrix mul(matrix, matrix, int)':
0_0_38276577_19186.cpp:19:1: error: expected primary-expression before '=' token
 = 1; k <= n; k++) c.x[i][j] = (c.x[i][j] + a.x[i][k] * b.x[k][j]) % MOD;            for (int k 
 ^
0_0_38276577_19186.cpp:19:6: error: 'k' was not declared in this scope
 = 1; k <= n; k++) c.x[i][j] = (c.x[i][j] + a.x[i][k] * b.x[k][j]) % MOD;            for (int k 
      ^
0_0_38276577_19186.cpp:20:9: error: expected ';' before '}' token
         }
         ^
0_0_38276577_19186.cpp:20:9: error: expected primary-expression before '}' token
0_0_38276577_19186.cpp:20:9: error: expected ';' before '}' token
0_0_38276577_19186.cpp:20:9: error: expected primary-expression before '}' token
0_0_38276577_19186.cpp:20:9: error: expected ')' before '}' token
0_0_38276577_19186.cpp:20:9: error: expected primary-expression before '}' token