c++中字符数组与字符串的转换

来源于互联网

1：字符数组换为字符串

见代码

[cpp] view
plaincopyprint?

#include

#include

using namespace std;

int
main(){

char
a[10]="aaaabbbba";

string
s(&a[0],&a[strlen(a)]);

cout<<s<<endl;

system("pause");

}

#include
#include
using namespace std;

int main(){
char a[10]="aaaabbbba";
string s(&a[0],&a[strlen(a)]);
cout<<s<<endl;
system("pause");
}

2：把字符串转换为字符数组
见代码：

[cpp] view
plaincopyprint?

#include

#include

using namespace std;

int
main(){

string s="aaaavvva";

char
a[10];

strncpy(a,s.c_str(),s.length());

for(int i=0;i<10;i++)

cout<<a[i]<<" ";

cout<<endl;

system("pause");

}

#include
#include
using namespace std;

int main(){
string s="aaaavvva";
char a[10];
strncpy(a,s.c_str(),s.length());

for(int i=0;i<10;i++)
cout<<a[i]<<" ";
cout<<endl;
system("pause");
}

[b]3：把字符串转换为数字[/b]

[cpp] view
plaincopyprint?

#include

using namespace std;

int main()

{

char a='1';

int
x;

x=atoi(a);

cout<<x<<endl;

getchar();

return 0;

}