qfedu-basic-level/day4/d10.cpp

15 lines
361 B
C++
Raw Permalink Normal View History

2023-06-15 16:43:42 +08:00
#include <iostream>
using namespace std;
int main()
{
char c = 'a'; // 1B
int m = 2; // 4B
// 小字节转大字节, 会自动转换
m += c; // 先将c转换为int,再相加
cout << "m = " << m << endl;
// 大字节转小字节,会丢失精度,需要强制类型转换
cout << "m to char is " << (char)m << endl;
return 0;
}