foo.c: In function 'main':
foo.c:7:19: error: stray '\357' in program
  printf("%d\n",a+b）；
                   ^
foo.c:7:20: error: stray '\274' in program
  printf("%d\n",a+b）；
                    ^
foo.c:7:21: error: stray '\211' in program
  printf("%d\n",a+b）；
                     ^
foo.c:7:22: error: stray '\357' in program
  printf("%d\n",a+b）；
                      ^
foo.c:7:23: error: stray '\274' in program
  printf("%d\n",a+b）；
                       ^
foo.c:7:24: error: stray '\233' in program
  printf("%d\n",a+b）；
                        ^
foo.c:8:1: error: expected ')' before '}' token
 }
 ^
foo.c:8:1: error: expected ';' before '}' token
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&a,&b);
  ^~~~~~~~~~~~~~~~~~~

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