View Compilation Error

0_0_30642270_32602.cpp: In function 'double square(int, int, int, int, int, int)':
0_0_30642270_32602.cpp:33:44: error: expected primary-expression before ',' token
         double s1=sita*R*R-R*dis*sin(sita);, 
                                            ^
0_0_30642270_32602.cpp:37:9: error: expected primary-expression before 'double'
         double co1=(r*r+dis*dis-R*R)/2/r/dis;
         ^
0_0_30642270_32602.cpp:38:30: error: 'co1' was not declared in this scope
         double sita1=pi-acos(co1);
                              ^