foo.cc: In function 'int main()':
foo.cc:23:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   23 |     if(x2%y==0)
      |     ^~
foo.cc:25:6: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   25 |      y++;
      |      ^
foo.cc:10:11: warning: unused variable 'n' [-Wunused-variable]
   10 |   int y=2,n;
      |           ^
foo.cc:5:14: warning: unused variable 'x11' [-Wunused-variable]
    5 |  int x,x1,x2,x11;
      |              ^~~

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