foo.cc: In function 'bool bitcheck(int, int)':
foo.cc:34:1: warning: control reaches end of non-void function [-Wreturn-type]
   34 | }
      | ^
foo.cc: In function 'void search(int, int)':
foo.cc:75:9: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
   75 |   system("pause");
      |   ~~~~~~^~~~~~~~~
foo.cc: In function 'int main()':
foo.cc:102:8: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
  102 |  system("pause");
      |  ~~~~~~^~~~~~~~~

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