View Compilation Error

0_0_26185754_5131.cpp:3:15: error: '::main' must return 'int'
 void main(void)
               ^
0_0_26185754_5131.cpp: In function 'int main()':
0_0_26185754_5131.cpp:7:7: error: expected ';' before 'if'
       if(m>n)
       ^