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。
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:
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]='6'; cout<<c<<endl; cout<<strlen(c); return 0; }
结果:
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