Pakkaus

input/code.cpp: In function 'int main()':
input/code.cpp:42:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < merkkijono.length(); i++) {
                                         ^
input/code.cpp:54:11: error: request for member 'append' in 'tulos', which is of non-class type 'char*'
     tulos.append(merkit);
           ^
input/code.cpp:58:10: error: request for member 'append' in 'tulos', which is of non-class type 'char*'
    tulos.append(merkit);
          ^

#include <string>
#include <iostream>
#include <vector>
 
using namespace std;
 
int numeroidenMaara(int i) {
	int numerot = 0;
	while (i) {
		i /= 10;
		numerot++;
	}
	return numerot;
}
 
 
int main() {
	string merkkijono;
	vector<int> numeroIndeksit;
	vector<int> maarat;
 
	cin >> merkkijono;
 
	char *tulos = new char[1000000];
 
	while (merkkijono.length() > 0) {
		int maara = atoi(merkkijono.c_str());
 
		if (maara == 0) {
			merkkijono.erase(0, 1);
 
			continue;
		}
		else if (maara < 0) return 0;
		else {
			int numerot = numeroidenMaara(maara);
 
			merkkijono.erase(0, numerot);
		}
 
		string merkit;
		for (int i = 0; i < merkkijono.length(); i++) {
			if (!isdigit(merkkijono.at(i))) {
				merkit += merkkijono.at(i);
			}
			else {
				break;
			}
		}
 
		merkkijono.erase(0, merkit.length());
		if (maara != 0) {
			for (int i = 0; i < maara; i++) {
				tulos.append(merkit);
			}
		}
		else {
			tulos.append(merkit);
		}
	}
 
	return 0;
}