/in/foo.c: In function 'main':
/in/foo.c:9:3: warning: implicit declaration of function 'pintf' [-Wimplicit-function-declaration]
   pintf("%c\n",ch+32）；
   ^~~~~
/in/foo.c:9:21: error: stray '\357' in program
   pintf("%c\n",ch+32）；
                     ^
/in/foo.c:9:22: error: stray '\274' in program
   pintf("%c\n",ch+32）；
                      ^
/in/foo.c:9:23: error: stray '\211' in program
   pintf("%c\n",ch+32）；
                       ^
/in/foo.c:9:24: error: stray '\357' in program
   pintf("%c\n",ch+32）；
                        ^
/in/foo.c:9:25: error: stray '\274' in program
   pintf("%c\n",ch+32）；
                         ^
/in/foo.c:9:26: error: stray '\233' in program
   pintf("%c\n",ch+32）；
                          ^
/in/foo.c:10:2: error: expected ')' before 'return'
  return 0;
  ^~~~~~
/in/foo.c:11:1: error: expected ';' before '}' token
 }
 ^