foo.cc: In function 'int main()':
foo.cc:7:14: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
    7 |         if(10>a>=1)
      |            ~~^~
foo.cc:11:17: warning: comparison of constant '10' with boolean expression is always false [-Wbool-compare]
   11 |         if(100>a>=10)
      |            ~~~~~^~~~
foo.cc:11:15: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
   11 |         if(100>a>=10)
      |            ~~~^~
foo.cc:15:18: warning: comparison of constant '100' with boolean expression is always false [-Wbool-compare]
   15 |         if(1000>a>=100)
      |            ~~~~~~^~~~~
foo.cc:15:16: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
   15 |         if(1000>a>=100)
      |            ~~~~^~
foo.cc:19:19: warning: comparison of constant '1000' with boolean expression is always false [-Wbool-compare]
   19 |         if(10000>a>=1000)
      |            ~~~~~~~^~~~~~
foo.cc:19:17: warning: comparisons like 'X<=Y<=Z' do not have their mathematical meaning [-Wparentheses]
   19 |         if(10000>a>=1000)
      |            ~~~~~^~

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