View Compilation Error

0_0_1885012_10963.cpp: In function `bignum function(bignum)':
0_0_1885012_10963.cpp:306: error: no `operator++(int)' declared for postfix `++', trying prefix operator instead
0_0_1885012_10963.cpp: In function `int main()':
0_0_1885012_10963.cpp:332: error: no `operator--(int)' declared for postfix `--', trying prefix operator instead