编程题 模板生成系统

#include "map"
#include "iostream"
#include "string"
 
using namespace std;
 
int main() {
    int lineNum, varNum;
    cin >> lineNum >> varNum;
    string inputStr, outputStr, tempStr;
    map<string, string> varDict;
 
    getchar(); // consume next new line character
    for(int i=0; i<lineNum; i++) {
      getline(cin, tempStr);
      inputStr += tempStr + ‘\n‘;
    }
    //cout << inputStr;
 
    string varKey, varValue;
    for(int i=0; i<varNum; i++) {
      cin >> varKey;
      getline(cin, tempStr);
      int startQuote = tempStr.find("\"");
      int endQuote = tempStr.rfind("\"");
      varValue = tempStr.substr(startQuote+1, endQuote-startQuote-1);
      //cout << value;
      varDict[varKey] = varValue;
    }
 
    int startPos, endPos; // startPos->{{ endPos->}}
    int startPoint = 0; // start position for string.find
 
    while(true) {
      startPos = inputStr.find("{{", startPoint);
      endPos = inputStr.find("}}", startPos);
      if(startPos<0 || endPos <0) break;
      varKey = inputStr.substr(startPos+3, endPos-startPos-4);
      varValue = "";
      if(varDict.find(varKey) != varDict.end()) varValue = varDict[varKey];
      outputStr += inputStr.substr(startPoint, startPos-startPoint) + varValue;
      startPoint = endPos + 2;
    }
    outputStr += inputStr.substr(startPoint, inputStr.length());
 
    cout << outputStr;
}