Question

Ｃ++　整型数组转换成字符串

例如有一个整型数组a1[10],怎么把这个数组的１０个元素连成字符串输出。注意：不是ＭＦＣ，所以没有Cstring类，用的是char

Answer 1

#include<iostream>
using namespace std;
int main()
{
int a[10]={1,2,3,5,7,8,9,5,3,0};
char str[256];
for (int i=0;i<10;i++)
{
itoa(a[i],&str[i],10); //itoa函数
}
str[i]='\0';
cout<<str<<endl;
return 0;
}

Answer 2

再提供一个方法，用stringstream

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

template <class T, class U>
T lexical_cast(U u)
{
stringstream sstrm;
sstrm << u;
T t;
sstrm >> t;
return t;
}

int main()
{
int a[] = {1,2,3,4,5,6,7,8,9,10};
string s;
for(int i = 0; i < 10; ++i)
s += lexical_cast<string>(a[i]);
cout << s << endl;
}