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#2
mmmmmmmmmmmm2012-11-27 23:04
 程序代码：#include<iostream> #include<string> using namespace std; class strings { public: strings(string a); private: char contents[50]; int length; }; strings::strings(string a) { int l; char s[6]="hallo"; l=strlen(s); //方法应使用strlen() cout<<"The original string and length"<<endl; cout<<s<<" "<<l<<endl; strcpy(contents,s);//字符串才可以直接用+的 strcat(contents,a.c_str()); length=strlen(contents); cout<<" now string and length"<<endl; cout<<contents<<" "<<length<<endl; } void main() { string a; cout<<"please input a string"<<endl; cin>>a; strings sd(a); //构造函数要有参数的 } |
# include<iostream.h>
# include<string.h>
class strings
{
public:
strings(string a);
private:
char contents[50];
int length;
};
strings::strings(string a)
{
int l;
char s[6]="hallo";
l=length(s);
cout<<"The original string and length"<<endl;
cout<<s<<" "<<l<<endl;
contents=s+a;
length=strlen(contents);
cout<<" now string and length"<<endl;
cout<<contents<<" "<<length<<endl;
}
void main()
{
strings sd;
string a;
cout<<"please input a string"<<endl;
cin>>a;
sd(a);
}
