foo.cc: In function 'int main()':
foo.cc:10:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   10 |         if(b=0){
      |            ~^~
foo.cc:13:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   13 |         if(c=0 && d!=0){
      |            ~^~~~~~~~~~
foo.cc:5:21: warning: unused variable 'e' [-Wunused-variable]
    5 |         int a,b,c,d,e;
      |                     ^

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