c++ string char* 获取输入值的区别

#include <iostream>  
#include <string>  
using namespace std;  
  
  
void reverseStr(string &s,int begin,int end){  
      
    while (begin < end) {  
        char temp = s[begin];  
        s[begin] = s[end];  
        s[end] = temp;  
        begin++;  
        end--;  
    }  
}  
  
  
int main(){  
  
     //对于char* / char[]  
    char s[1001];  
    cout<<"Please input char[]:"<<endl;  
    cin.getline(s, 1000);//iostream下的函数, 第二个参数表示允许的最大输入长度  
    cout<<"Output:"<<endl<<s<<endl<<strlen(s)<<endl;   
  
    //对于string  
    string ss;  
    cout<<"Please input string:"<<endl;  
    getline(cin, ss); //这个getline函数在<string>头文件下  
    cout<<"Output:"<<endl<<ss<<endl<<ss.length()<<endl; 
	
	int i=0;
	int j=0;
	int icount=0;
	int jcount=0;
	while(s[i]!=''){
		cout<<s[i]<<icount<<" ";
		i++;
		icount++;
	}

	cout<<endl;
	while(ss[j]!=''){
		cout<<s[j]<<jcount<<" ";
		j++;
		jcount++;
	}

	cout<<endl;
	
    return 0;  
}