View Compilation Error

0_0_16425074_14240.cpp: In function 'int digitCalculator(int)':
0_0_16425074_14240.cpp:37:9: error: expected 'while' before 'digit'
  return digit;
         ^
0_0_16425074_14240.cpp:37:9: error: expected '(' before 'digit'
0_0_16425074_14240.cpp:37:14: error: expected ')' before ';' token
  return digit;
              ^