foo.cc: In function 'int main()':
foo.cc:8:4: error: expected primary-expression before '%' token
    8 |  b=%100/10;
      |    ^
foo.cc:9:4: error: expected primary-expression before '%' token
    9 |  c=%10;
      |    ^
foo.cc:10:16: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
   10 |  if(a^3+b*3+c*3==d)
      |       ~~~~~~~~~^~~
foo.cc:12:16: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
   12 |  if(a^3+b*3+c*3!=d)
      |       ~~~~~~~~~^~~

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