C++int to string to char

推荐最后一种流的方式。

// CPP program to convert string  
// to char array 
#include <bits/stdc++.h> 

using namespace std; 

// driver code 
int main() 
{ 
    // assigning value to string s 
    string s = "geeksforgeeks"; 

    int n = s.length();  

    // declaring character array 
    char char_array[n+1];  

    // copying the contents of the  
    // string to char array 
    strcpy(char_array, s.c_str());  

    for (int i=0; i<n; i++) 
      cout << char_array[i];     

    return 0; 
}

std::string s = std::to_string(number);
char const *pchar = s.c_str();

#include<iostream>
#include<string>
#include<sstream>
using namespace std;

int main()
{
    int i;
    cin >> i;
    stringstream s;
        string str = "100";
    for(int j = 1; j <= i; j++)
    {
        s << j;
    }
    cout << s.str();
    str >> i;
        cout << i;
        s.clear();//chear s
}

#include<iostream>
#include<string>
#include<sstream>
using namespace std;

int main()
{
    int i;
    string str;
    cin >> str;
    stringstream ss;
    ss << str;
    ss >> i;
    cout << i;
}

jinlukang1 / issue-Notebook

C++int to string to char #9