foo.cc: In function 'void srch(int)':
foo.cc:56:11: warning: unused variable 'j' [-Wunused-variable]
   56 |     int i,j;
      |           ^
foo.cc: In function 'int main()':
foo.cc:75:11: warning: unused variable 'j' [-Wunused-variable]
   75 |     int i,j;
      |           ^
foo.cc:76:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   76 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~
foo.cc:78:13: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   78 |        scanf("%d%d",&dots[i].x,&dots[i].y);
      |        ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:88:11: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
   88 |     system("pause");
      |     ~~~~~~^~~~~~~~~

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