C++中将int转变成string和string转变成int

int to string

#include<iostream>

#include<string>

using namespace std;

int main()

{

    string s;

    char c[100];

    int m=199;

    itoa(m,c,10);

    s=c;

    s.insert(0,"zhang");

    cout<<s<<endl;

    return 0;





}

string to int

#include<iostream>

#include<string>

using namespace std;

int main()

{

    string s="56sd";

    int a=atoi(s.c_str());

    cout<<a<<endl;

    return 0;

}

 

 

另外一种方法，包含#include<sstream>,例如

#include<iostream>

#include<sstream>

#include<string>

using namespace std;

int main()

{

	stringstream s;

	string ss="234";

	s<<ss;

	s<<"abcd";





	string s0;

	int n;

	s>>n;

	s>>s0;



	cout<<n<<"  "<<s0<<endl;



	return 0;

}