foo.cc: In function 'int main()':
foo.cc:11:16: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   11 |         while(c=e)
      |               ~^~
foo.cc:13:22: error: expected ';' before '}' token
   13 |                 c=a+b
      |                      ^
      |                      ;
......
   16 | }
      | ~                     
foo.cc:16:2: error: expected '}' at end of input
   16 | }
      |  ^
foo.cc:5:1: note: to match this '{'
    5 | {
      | ^

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