foo.c: In function 'main':
foo.c:5:28: error: stray '\357' in program
  scanf("%d,%d,%d",&a,&b,&c)；
                            ^
foo.c:5:29: error: stray '\274' in program
  scanf("%d,%d,%d",&a,&b,&c)；
                             ^
foo.c:5:30: error: stray '\233' in program
  scanf("%d,%d,%d",&a,&b,&c)；
                              ^
foo.c:6:5: error: expected ';' before 'if'
     if(a<b)
     ^~
foo.c:9:3: error: 'else' without a previous 'if'
   else
   ^~~~
foo.c:14:5: error: 'else' without a previous 'if'
     else
     ^~~~
foo.c:23:1: error: expected ';' before '}' token
 }
 ^
foo.c:5:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d,%d,%d",&a,&b,&c)；
  ^~~~~~~~~~~~~~~~~~~~~~~~~~

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