View Compilation Error

0_0_24406822_25403.cpp:12:11: error: '::main' must return 'int'
 void main()
           ^
0_0_24406822_25403.cpp: In function 'int main()':
0_0_24406822_25403.cpp:19:8: error: 'i' was not declared in this scope
    for(i=0;i<n;i++)
        ^