foo.cc: In function 'int main()':
foo.cc:22:14: error: expected ')' before ';' token
   22 |    printf("1";)
      |          ~   ^
      |              )
foo.cc:22:15: error: expected primary-expression before ')' token
   22 |    printf("1";)
      |               ^
foo.cc:27:14: error: expected ')' before ';' token
   27 |   printf("-1";)
      |         ~    ^
      |              )
foo.cc:27:15: error: expected primary-expression before ')' token
   27 |   printf("-1";)
      |               ^
foo.cc:8:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |  scanf("%s",a);
      |  ~~~~~^~~~~~~~
foo.cc:9:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |  scanf("%s",b);
      |  ~~~~~^~~~~~~~

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