foo.c: In function 'main':
foo.c:10:14: error: stray '\357' in program
         scanf（"%d", &x);
              ^
foo.c:10:15: error: stray '\274' in program
         scanf（"%d", &x);
               ^
foo.c:10:16: error: stray '\210' in program
         scanf（"%d", &x);
                ^
foo.c:10:9: warning: statement with no effect [-Wunused-value]
         scanf（"%d", &x);
         ^~~~~
foo.c:10:17: error: expected ';' before string constant
         scanf（"%d", &x);
                 ^~~~
foo.c:10:25: error: expected statement before ')' token
         scanf（"%d", &x);
                         ^
foo.c:6:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ^~~~~~~~~~~~~~~
foo.c:7:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &x1);
     ^~~~~~~~~~~~~~~~

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