C++计算器程序.问题

如果有人有什么建议，我可以利用帮助。程序编译，但不编译
正确计算。我已经尝试了无数次重述，但我陷入了困境。有什么建议吗
我必须初始化所有这些变量？非常感谢。

//This program mimics a calculator
//*****************************************
#include <iostream>
#include <iomanip>
using namespace std;
int main ()
{
double firstint, secint, ansrlt, ansrlt2, ansrlt3, ansrlt4;
char operat;
cout << fixed << showpoint;
cout << setprecision(4);
cout << "This program mimics a standard calculator and outputs a result accurate to 4 decimal   
places." <<endl;
cout << 'n';
cout << "Please enter 1st Integer to be calculated: ";
cin >> firstint;
cout << 'n';
cout << "Please enter operation to be performed in the form of *, /, +, - : ";
cin >> operat;
cout << 'n';
cout << "Please enter 2nd Integer to be calculated: ";
cin >> secint;
cout << 'n';
if (operat == '/' && secint == 0)
    cout << "Division by 0 not allowed enter again." << endl;
cin.get();
if (operat == '*')
    ansrlt = firstint * secint;
    cout << firstint << " " << operat << " " << secint << " = " << ansrlt << endl;
cin.get();
if (operat == '/')
    ansrlt2 = firstint / secint;
    cout << firstint << " " << operat << " " << secint << " = " << ansrlt2 << endl;
cin.get();
if (operat == '+')
    ansrlt3 = firstint + secint;
    cout << firstint << " " << operat << " " << secint << " = " << ansrlt3 << endl;
cin.get();
    ansrlt4 = firstint - secint;
    cout << firstint << " " << operat << " " << secint << " = " << ansrlt4 << endl;
cin.get();
return 0;
}