/in/foo.c: In function 'main':
/in/foo.c:12:2: error: expected ';' before 'for'
  for(int i=0;i<N;i++){
  ^~~
/in/foo.c:12:14: error: 'i' undeclared (first use in this function)
  for(int i=0;i<N;i++){
              ^
/in/foo.c:12:14: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:12:21: error: expected ';' before ')' token
  for(int i=0;i<N;i++){
                     ^
/in/foo.c:12:21: error: expected statement before ')' token