View Compilation Error

0_0_37054056_10699.cpp: In function 'int main()':
0_0_37054056_10699.cpp:7:20: error: expected ';' before 'for'
 #define rep(i,a,b) for(int i=a;i<=b;i++)
                    ^
0_0_37054056_10699.cpp:44:3: note: in expansion of macro 'rep'
   rep(i,1,n) 
   ^
0_0_37054056_10699.cpp:44:7: error: 'i' was not declared in this scope
   rep(i,1,n) 
       ^
0_0_37054056_10699.cpp:7:32: note: in definition of macro 'rep'
 #define rep(i,a,b) for(int i=a;i<=b;i++)
                                ^