View Compilation Error

0_0_17729610_20065.cpp: In function 'int main()':
0_0_17729610_20065.cpp:36:10: error: 'y1y' was not declared in this scope
          y1y=(tmx1-x)*sin(p)+(tmy1-y)*cos(p)+y;
          ^
0_0_17729610_20065.cpp:45:21: error: expected ';' before ')' token
      t2=(t2+0.5)/2.0);
                     ^