/in/foo.c: In function 'main':
/in/foo.c:4:9: error: stray '\357' in program
  float f，c;
         ^
/in/foo.c:4:10: error: stray '\274' in program
  float f，c;
          ^
/in/foo.c:4:11: error: stray '\214' in program
  float f，c;
           ^
/in/foo.c:4:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'c'
  float f，c;
            ^
/in/foo.c:4:12: error: 'c' undeclared (first use in this function)
/in/foo.c:4:12: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:6:15: error: 'f' undeclared (first use in this function)
    c=1.0*5/9*(f-32）；
               ^
/in/foo.c:6:19: error: stray '\357' in program
    c=1.0*5/9*(f-32）；
                   ^
/in/foo.c:6:20: error: stray '\274' in program
    c=1.0*5/9*(f-32）；
                    ^
/in/foo.c:6:21: error: stray '\211' in program
    c=1.0*5/9*(f-32）；
                     ^
/in/foo.c:6:22: error: stray '\357' in program
    c=1.0*5/9*(f-32）；
                      ^
/in/foo.c:6:23: error: stray '\274' in program
    c=1.0*5/9*(f-32）；
                       ^
/in/foo.c:6:24: error: stray '\233' in program
    c=1.0*5/9*(f-32）；
                        ^
/in/foo.c:7:5: error: expected ')' before 'printf'
     printf("%.1f\n",f);
     ^~~~~~
/in/foo.c:9:1: error: expected ';' before '}' token
 }
 ^