/in/foo.c: In function 'main':
/in/foo.c:6:7: error: stray '\357' in program
  scanf（"%d %d",&a,&n);
       ^
/in/foo.c:6:8: error: stray '\274' in program
  scanf（"%d %d",&a,&n);
        ^
/in/foo.c:6:9: error: stray '\210' in program
  scanf（"%d %d",&a,&n);
         ^
/in/foo.c:6:2: warning: statement with no effect [-Wunused-value]
  scanf（"%d %d",&a,&n);
  ^~~~~
/in/foo.c:6:10: error: expected ';' before string constant
  scanf（"%d %d",&a,&n);
          ^~~~~~~
/in/foo.c:6:23: error: expected statement before ')' token
  scanf（"%d %d",&a,&n);
                       ^
/in/foo.c:7:9: warning: right-hand operand of comma expression has no effect [-Wunused-value]
  for(i=1,i<=n,i++);
         ^
/in/foo.c:7:18: error: expected ';' before ')' token
  for(i=1,i<=n,i++);
                  ^
/in/foo.c:7:18: error: expected expression before ')' token