View Compilation Error

0_0_33296164_7432.cpp:61:2: error: expected unqualified-id before numeric constant
  62     Point rotate(const Point &p,double angle, double k = 1) {
  ^
0_0_33296164_7432.cpp: In member function 'double Point::len2()':
0_0_33296164_7432.cpp:45:9: error: expected ';' before '}' token
  46     }
         ^
0_0_33296164_7432.cpp: In function 'void step2()':
0_0_33296164_7432.cpp:168:25: error: 'struct Point' has no member named 'rotate'
         vec = (p + vec).rotate(p,-ag);
                         ^
0_0_33296164_7432.cpp:169:28: error: 'struct Point' has no member named 'rotate'
      }else vec = (p + vec).rotate(p,ag);
                            ^
0_0_33296164_7432.cpp: In function 'void step3()':
0_0_33296164_7432.cpp:187:26: error: 'struct Point' has no member named 'rotate'
          vec = (p + vec).rotate(p,-ag);
                          ^
0_0_33296164_7432.cpp:188:28: error: 'struct Point' has no member named 'rotate'
      }else vec = (p + vec).rotate(p,ag);
                            ^