2.1 内置数据类型

#include <iostream>using namespace std;int main(){int ival = 1024;double dval = 3.14159;float fval = 3.14159;int ival2 = ival + 4096; // additioncout << ival2 << endl;int ival3 = ival2 - ival; // subtractioncout << ival3 << endl;dval = fval * ival; // multiplicationcout << dval << endl;ival = ival3 / 2; // divisioncout << ival << endl;bool result = ival2 == ival3; // equalitycout << result << endl;result = ival2 + ival != ival3; // inequalitycout << result << endl;result = fval + ival2 < dval; // less-thancout << result << endl;result = ival > ival2; // greater-thancout << result << endl;return 0;}