View Compilation Error

1_556_1316_4536.cpp: In function `int cmd(LNode, LNode)':
1_556_1316_4536.cpp:20: error: expected `;' before "y"
1_556_1316_4536.cpp: In function `int main()':
1_556_1316_4536.cpp:28: error: expected `;' before ')' token
1_556_1316_4536.cpp:31: error: `sort' undeclared (first use this function)
1_556_1316_4536.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)
1_556_1316_4536.cpp:33: error: expected `;' before ')' token