View Compilation Error

0_0_20908366_10201.cpp:7:11: error: '::main' must return 'int'
 void main()
           ^
0_0_20908366_10201.cpp: In function 'int main()':
0_0_20908366_10201.cpp:23:9: error: 'i' was not declared in this scope
      HE[i]+=   (nextHE-HE[i] <0. ? HE[i]-nextHE : nextHE-HE[i])< 1e-15   ?  T[i] : 0. ;
         ^
0_0_20908366_10201.cpp:26:24: error: 'happyTime' was not declared in this scope
         double result= happyTime/432.;
                        ^
0_0_20908366_10201.cpp: At global scope:
0_0_20908366_10201.cpp:29:3: error: expected unqualified-id before 'return'
   return 0;
   ^
0_0_20908366_10201.cpp:30:1: error: expected declaration before '}' token
 }
 ^