/in/foo.c: In function 'main':
/in/foo.c:19:14: error: stray '\357' in program
  int n1,n2,n3；
              ^
/in/foo.c:19:15: error: stray '\274' in program
  int n1,n2,n3；
               ^
/in/foo.c:19:16: error: stray '\233' in program
  int n1,n2,n3；
                ^
/in/foo.c:20:2: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'int'
  int i;
  ^~~
/in/foo.c:21:26: error: 'n3' undeclared (first use in this function)
  scanf("%d%d%d",&n1,&n2,&n3);
                          ^~
/in/foo.c:21:26: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:22:6: error: 'i' undeclared (first use in this function)
  for(i=0;i<n1;i++)
      ^