weixin_42173948的博客

引用交换，部分时候代替指针#include<stdio.h>void swap(int&a, int&b){ int t = a; a = b; b = t;}int main(){ int a = 1; int b = 2; swap(a,b); printf("a= %d\tb=%d\n",a ,b);//2, 1}引用中的const让变量拥有只读属性int a= 1const int &b = a;int *p = (int

理论：bool类型：占用一个字节true：非零，表现为1false：零，表现为0#include <stdio.h>int main(int argc, char *argv[]){ bool b = false; int a = b; printf("sizeof(b) = %d\n", sizeof(b));//1 printf("b = %d, a = %d\n", b, a);//0,0 b = 3; a