本文主要是介绍⭐⭐201703-3 Markdown，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
SOS写了两个小时只得了10分，居敏！
#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <vector>
#include <map>
#include<string>
using namespace std;
string line, text;
int pos1,pos2,pos3,pos;
int num;//记录数字
// 段落处理
string temptext;
string link;
int i;
void solve()
{ //首先处理强调pos1 = 0;num=0;for (pos1 = text.find("_", pos1); pos1 != string::npos; pos1= text.find("_", pos1 )){//printf("pos1=%d\n",pos1);num++;if(num&1)//如果是奇数text.replace(pos1, 1, "<em>");elsetext.replace(pos1, 1, "</em>");pos1++;}//处理超级链接pos = pos2 = pos3 = 0;pos1 = text.find("[",pos);pos2 = text.find("](", pos1);pos3 = text.find(")",pos2);for (;pos1!=-1&&pos2!=-1&&pos3!=-1;){temptext = text.substr(pos1+1,pos2-pos1-1);link = text.substr(pos2+2,pos3-pos2-2);text.replace(pos1,pos3-pos1+1,"<a href=\""+link+"\">"+temptext+"</a>");pos = pos3 + 1;pos1 = text.find("[", pos);pos2 = text.find("](", pos1);pos3 = text.find(")", pos2);}//下面处理区块//是标题if (text[0] == '#')//是标题{//printf("是标题\n");for (i = 0; i < text.length(); i++){if (text[i] != '#')break;} char c[5];c[0] = '<';c[1] = 'h';c[2] = i+'0';c[3] = '>';c[4] = '\0';while (text[i] == ' ')//还是空格的时候{ i++;}text.replace(0,i,c);text.insert(text.length() - 1, c);}else if (text[0] == '*')//是无序列表{//printf("是无序列表\n"); // cout << "处理前" << text << endl;text.insert(0, "<ul>\n");pos1 = 1;pos1 = text.find("\n");int num = 0;for (; pos1 != -1; pos1 = text.find("\n*", pos1 + 5)){//printf("pos1=%d\n",pos1);num++;if (num & 1)//是奇数{text.replace(pos1 + 1, 1, "<li>");//cout << text << endl;i = pos1+5;while (text[i] == ' '){i++;}// printf("i=%d\n",i);text.erase(pos1 + 5, i-pos1-5);// cout << text << endl;}else//是偶数{text.insert(pos1, "</li>");} }text.insert(text.length()-1, "</li>\n</ul>\n");}else//是普通段落{// printf("是普通段落\n");text.insert(0,"<p>");text.insert(text.length()-1, "</p>");}cout << text << endl;text = "";//text重新清零
}int main()
{bool flag = false;getline(cin, line);//这样逐行输入line，其实处理的是text，并且没有忘记换行符号for (; ;) {if (line.size() > 0)text += line + "\n";else if (line.size() == 0 && text.size() > 0){// cout<<"开始处理"<<endl;solve();}if (flag) break;if (!getline(cin, line)) {flag = true;line = "";}}return 0;
}参考链接
还是自己的思路不够清晰，搞太复杂了，经典的字符串处理啊啊啊！
#define _CRT_SECURE_NO_WARNINGS 1
#include <iostream>
#include <vector>
#include <map>
#include<string>
/* CCF201703-3 Markdown */
using namespace std;
string line, text;
// 段落处理
void solve()
{// 处理下划线：标签<em></em>int leftp = text.find("_");while (leftp != string::npos) {text.replace(leftp, 1, "<em>");int rightp = text.find("_", leftp);text.replace(rightp, 1, "</em>");leftp = text.find("_", rightp);}// 处理方括号leftp = text.find("[");while (leftp != string::npos) {int rightp = text.find("]", leftp);int leftp2 = text.find("(", rightp);int rightp2 = text.find(")", leftp2);string tmp = text.substr(leftp + 1, rightp - leftp - 1);string tmp2 = text.substr(leftp2 + 1, rightp2 - leftp2 - 1);text.replace(text.begin() + leftp, text.begin() + rightp2 + 1, "<a href=\"" + tmp2 + "\">" + tmp + "</a>");leftp = text.find("[", rightp2);}if (text[0] == '#') {// 处理#：标签<h></h>int i = 0;while (text[i] == '#') i++;//这里的string好像转换成了字符类型text = "<h" + string(1, '0' + i) + ">" + text.substr(i + 1);text.insert(text.size() - 1, "</h" + string(1, '0' + i) + ">");}else if (text[0] == '*') {// 处理*：标签<ul><li></li>......</ul>text.insert(0, "<ul>\n");text.insert(text.size(), "</ul>\n");int leftp = text.find("*");while (leftp != string::npos) {int rightp = text.find("\n", leftp);text.insert(rightp, "</li>");text.replace(leftp, 2, "<li>");leftp = text.find("*", rightp);}}else {// 处理段落：<p></p>text = "<p>" + text.substr(0, text.size() - 1) + "</p>\n";}cout << text;text = "";
}int main()//注意这里的输入很重要！
{bool flag = false;getline(cin, line);for (; ;) {if (line.size() > 0)text += line + "\n";else if (line.size() == 0 && text.size() > 0)solve();if (flag) break;if (!getline(cin, line)) {flag = true;line = "";}}return 0;
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