#include <iostream.h>#include <iomanip.h>int main(){int n;cin>>setbase(n);cout<<hex<<n<<endl<<dec<<n<<endl<<oct<<n<<endl;return 0;}error C2871: 'std' : does not exist or is not a namespaceerror C2065: 'setbase' : undeclared identifier怎么回事呢？大神不要打我。題目錯(cuò)了。沒(méi)有那個(gè)，只是error C2065: 'setbase' : undeclared identifier