题解 | #定义变量#

#include <iostream>
#include <ostream>
using namespace std;

int main() {

    // write
    char x1;
    int x2;
    long x3;
    double x4;
    cout<<sizeof(x1)<<endl;
    cout<<sizeof(x2)<<endl;
    cout<<sizeof(x3)<<endl;
    cout<<sizeof(x4)<<endl;

    return 0;
}