stringc("123456"); stringd("123dfg"); //下面是各种比较方法 //前面减去后面的ASCII码,>0返回1,<0返回-1,相同返回0 //完整比较a和b intm=a.compare(b); //“Bcdef”和“AbcdEf”的比较,比较a和b的从1到5位 intn=a.compare(1,5,b); ...
#include <iostream>#include <string>int main() {std::string str = "helloworld";int result = str.compare(0, 5, "hello");if (result < 0) {std::cout << "The substring is less than \"hello\"." << std::endl;} else if (result > 0) {std::cout << "The substring is greater ...
C++ STL | string comparison: In this article, we are going to seehow we can use comparison operators to compare two strings in C++? Submitted byRadib Kar, on February 27, 2019 String as datatype In C, we know string basically a character array terminated by\0. Thus to operate with the...
string::compare()is a standard library function that is used to compare between two strings or b/w two substrings as per use cases. Syntax int compare (const string& str) const; The invoking string is thecompared stringand the stringstrwhich is passed in the argument is the compared strin...
compare(str2)==0) { cout<<"str1等于str2"<<endl; } 7、string 插入和删除 string str="hello"; //插入 str.insert(1,"111"); //h111ello //删除 str.erase(1,3); //hello 8、string截取子串 string str="abcdefg"; string suBstr=str.substr(1,3);//bcd ...
2、int compare( const char *str ); 作用:用于比较当前字符串对象与以 null 结尾的 C-Style 字符串 str 是否相等。 参数:str 是要进行比较的 C-Style 字符串。 返回值:返回一个整数,表示比较结果。如果当前字符串小于 str,则返回一个负数;如果当前字符串等于 str,则返回 0;如果当前字符串大于 str,则返回...
2.8 string类中的compare()比较成员函数 2.9 字符串与数值之间的转换成员函数 3.力扣题目:“字符串解码” 其本身包含诸多string类基本成员函数的使用 1.string类的初始化操作 首先,在cpp中使用string类 一定需要导入其官方提供的头文件:#include <string> ...
利用assign将c字符串赋给s1后:are 四、字符串比较 bool operator==(conststring &s1,conststring &s2)const;//比较两个字符串是否相等 运算符">","<",">=","<=","!="均被重载用于字符串的比较; int compare(conststring &s)const;//比较当前字符串和s的大小 ...
int compare(const string &s) const;//比较当前字符串和s的大小 int compare(int pos, int n,const string &s)const;//比较当前字符串从pos开始的n个字符组成的字符串与s的大小 int compare(int pos, int n,const string &s,int pos2,int n2)const;//比较当前字符串从pos开始n个字符字符串与s中pos...
;compare函数在>时返回1,<时返回-1,==时返回0 string的子串:string substr(int pos = 0,int n = npos) const;//返回pos开始的n个字符组成的字符串string的交换:void swap(string &s2); //交换当前字符串与s2的值string类的查找函数:int find(char c, int pos = 0) const;//从pos开始查找字符c在...