View Compilation Error

0_0_27126100_23685.cpp: In function 'int main()':
0_0_27126100_23685.cpp:17:5: error: redefinition of 'int main()'
 int main(void)
     ^
0_0_27126100_23685.cpp:4:5: note: 'int main()' previously defined here
 int main(void)
     ^