
c++++中string类的常用方法如下:
1、获取字符串长度
#include#include #include using namespace std; int main() { string str1 = "hello"; int length = str1.length(); printf("调用str.length()函数获取字符串长度:%d\n\n",length ); return 0; }
2、字符串连接
#include#include #include using namespace std; int main() { string str1 = "hello"; string str2="my girl!"; string str3="hello "; string str4=str1+str2; string str5=str3+str2; cout<<"字符串str1+str2连接结果:"< 3、字符串比较
#include#include #include using namespace std; int main() { string str1 = "hello"; string str2="my girl!"; string str3="hello "; if (str1 < str3) cout << "字符串比较结果:" << "str1 4、字符串转字符数组
立即学习“C++免费学习笔记(深入)”;
#include#include #include #include using namespace std; int main() { string str1 = "hello"; string str2="my girl!"; string str3="hello "; char *d = new char[20]; //因为下一句那里不是直接赋值,所以指针类型可以不用const char * strcpy(d, str3.c_str()); //c_str 取得C风格的const char* 字符串 cout << "str3:" << c << endl; cout << "d:" << d << endl; str3 = "hahaha"; cout << "str3:" << c << endl; cout << "d:" << d << endl; return 0; } 推荐教程:c语言教程











