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How to convert char array to string

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2023-06-09 10:04:4224065browse

char数组转string的方法:可以通过赋值来实现,使用{char a[]=" abc d\0efg ";string s=a;}语法,让char数组对string直接赋值,执行代码即可完成转换。

How to convert char array to string

本文的操作环境:Windows10系统、C++ 20版本、dell g3电脑。

char数组转string方法:

1、可以直接赋值

2、代码:

#include<iostream>
using namespace std;
 
int main()
{
char a[]=" abc  d\0efg ";
string s=a;  //直接赋值
cout<<s;
return 0;
}

结果:

How to convert char array to string

拓展:

string转char数组:

1、调用strcpy函数,和字符串的data函数: (char数组可以更改)(string转char数组)

(1)strcpy不能赋值给char指针 ,只能赋值给char数组;

(2)char数组长度,必须大于等于string长度。

代码:

#include<iostream>
#include<cstring>
using namespace std;
 
int main()
{
string s="123456"; 
char c[s.length()]; 
/*
**调用strcpy函数,和字符串的data函数 
**1、strcpy不能赋值给char指针 ,只能赋值给char数组 
**2、char数组长度,必须大于等于string长度 
*/ 
strcpy(c,s.data());
c[0]=&#39;6&#39;;
cout<<c<<endl;
cout<<strlen(c);
return 0;
}

结果:

How to convert char array to string

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