View Compilation Error

0_0_23190273_17913.cpp:57:1: error: expected unqualified-id before '?' token
 ???????
 ^
0_0_23190273_17913.cpp: In function 'int main()':
0_0_23190273_17913.cpp:108:5: error: redefinition of 'int main()'
 int main() 
     ^
0_0_23190273_17913.cpp:11:5: note: 'int main()' previously defined here
 int main() 
     ^