C++類型別名
#include <iostream>
using namespace std;
typedef double db;
typedef db db1;
using integer = int;
/*
處理類型:
類型別名:
1. typedef double db;
typedef db db1; // 將double起了一個別名db,同時又給db起了個別名db1。
2. using integer = int; // 用integer替代了int
3. typedef char *pstring;
const pstring cstr = 0; // cstr是一個指向char的常量指針
const pstring *ps; // ps是一個指針,它指向的對象是一個指向char的常量指針
*/
void processType() {
cout << "處理類型:" << endl;
db score;
score = 99.87;
cout << "score: " << score << endl;
db1 sum_score = 999.89;
cout << "sum_score: " << sum_score << endl;
integer i = 10;
cout << "integer i: " << i << endl;
}