T1 延伸练习

int main() {
      short num1=10;
      int num2=10;
      long num3=10;
      long long num4=10;
      cout << "short 类型所占内存空间为：“ < sizeof(short)<< endl;
      cout << "int 类型所占内存空间为：" << sizeof(int)‹< endl;
      cout << "1ong 类型所占内存空间为：”<< sizeof(long) << endl;
      cout << "1ong 1ong 类型所占内存空间为：“ << sizeof (1ong long) << endl;
      cout sizeof (num1) << endl;
      cout sizeof (num2) << endl;
      cout sizeof (num3) << endl;
      system("pause");
      //整型大小比较
      //short < int <=long <=long long 
      return 0;
}
   

#include <iostream>
using namespace std;
int main(){
    int a,b;
    cout<<"请输入两个整数中间用空格分开"<<endl;
    cin<<a<<b;
    int c=a+b;
    cout<<"和为"<<c<<endl;
    //cout<<"和为"<<a+b<<endl;  这样可不可以
    //cout<<"和为"<<(a+b)<<endl;这样可不可以
    return 0;
}