/in/foo.cc: In function 'int main()':
/in/foo.cc:6:10: error: expected primary-expression before ')' token
  A=(A*20%);
          ^
/in/foo.cc:7:10: error: expected primary-expression before ')' token
  B=(B*30%);
          ^
/in/foo.cc:8:5: error: 'c' was not declared in this scope
  C=(c*50%);
     ^
/in/foo.cc:8:10: error: expected primary-expression before ')' token
  C=(c*50%);
          ^
/in/foo.cc:10:2: error: 'retnrn' was not declared in this scope
  retnrn 0;
  ^~~~~~
/in/foo.cc:10:2: note: suggested alternative: 'setns'
  retnrn 0;
  ^~~~~~
  setns