c++初级学习指南以及部分代码.docx

C++基础学习以及代码本文主要是针对c++的初级学习的读者，主要介绍的是主要类型、非成员函数、结构体、类和对象以及响应的例子以及代码。体会i++与++i的区别int myage=39; int yourage=39; couti am:myageyears old.endl; couti am:yourageyears old.endl; myage++; ++yourage; coutone year passes...endl; couti am:myageyears old.endl; couti am:yourageyears old.endl; coutanother year passes.endl; couti am:myage++years old.endl; couti am:++yourageyears old.endl; coutlet us print it again.endl; couti am:myageyears old.endl; couti am:yourageyears old.endl; cout32endl;输出32-127的ascll字母/*int i=32; int j=127; for(;i=j;i++) { coutchar(i)endl; } */Goto与switche的联合应用/*loop: char i; cout现在正在下雨吗？endl; cini; switch(i) { case Y : cout现在正在下雨。endl; break; case N: cout现在没有下雨。endl; break; default : cout输入错误！endl; goto loop; break; */看输入的分数来判断等级int i; cout你考试考了多少分？（0`100）endl; cini; if(i60) cout您的分数等级为：差endl; else if(i80) cout您的分数等级为：中endl; else if(i90) cout您的分数等级为：良endl; else cout您的分数等级为：优endl;//计算x的n次方 double power(double x,int n) { double val=1.0; while(n--) val*=x; return val; } int val=0; coutenter an 8bit binary number:; for(int i=7;i=0;i--) { char ch; cinch; if(ch==1) val+=power(2,i); } coutdecimal value is valendl;//arctan函数double arctan(double x){double sqr=x*x;double e=x;double r=0;int i=1;while (e/i1e-15){double f=e/i;r=(i%4==1)? r+f:r-f;e=e*sqr;i+=2;}return r;}//判断n是否为回文数bool symm(unsigned n){unsigned i=n;unsigned m=0;while (i0){m=m*10+i%10;i/=10;}return m==n;//应用指针的方法判断数组中的最大值和最小值void max_min(int *p,int len,int *pmax,int *pmin){int _max=p[0];int _min=p[0];for(int i=0;ilen;i++){if (p[i]_max)_max=p[i];if (p[i]_min)_min=p[i];}*pmax=_max;*pmin=_min;}//指针表示数组的最大值和最小值void _max(int *p, int n,int *pmax){int _max=p[0];for(int i=0;in;i++){if(p[i]_max)_max=p[i];} *pmax=_max;}void _min(int *p, int n,int *pmin){int _min=p[0];for(int i=0;in;i++){if(p[i]_min)_min=p[i];} *pmin=_min;}//结构体的利用struct biaoge{int id;char name[16];char phone[16];}; int main() { biaoge a[]= { zhangsan, lisi, wangwu }; cout日期\t