View Compilation Error

144739_0_29075.cpp:1: error: `ACMAlgorithm' has not been declared
144739_0_29075.cpp:1: error: expected namespace-name before ';' token
144739_0_29075.cpp:1: error: `<type error>' is not a namespace
144739_0_29075.cpp: In function `int main()':
144739_0_29075.cpp:8: error: `CBigInt' undeclared (first use this function)
144739_0_29075.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
144739_0_29075.cpp:8: error: expected `;' before "cBigTotal"
144739_0_29075.cpp:10: error: `cin' undeclared (first use this function)
144739_0_29075.cpp:12: error: `cBigTotal' undeclared (first use this function)
144739_0_29075.cpp:31: error: `cout' undeclared (first use this function)
144739_0_29075.cpp:31: error: `endl' undeclared (first use this function)