例子一:基本数据类型转换例子 int转string # include <string> # include <sstream> # include <iostream> int main() { std :: stringstream stream; std :: string result; int i = 1000 ; stream << i; // 将int输入流 stream >> result;
1#include <string>2#include <sstream>3#include <iostream>45intmain()6{7std::stringstream stream;8std::stringresult;9inti =1000;10stream << i;//将int输入流11stream >> result;//从stream中抽取前面插入的int值12std::cout << result << std::endl;//print the string "1000"13} 运行结果:...
int_temp=atoi(string_temp.c_str()); } 只需要一个函数既可以搞定,atoi()函数主要是为了和C语言兼容而设计的,函数中将string类型转换为c语言的char数组类型作为atoi函数的实参,转化后是int型。 string型转int型 void int2str(const int ∫_temp,string &string_temp) { char s[12]; //设定12位对于存储32...
#include"iostream"using namespace std;#include"string"intmain(){string s1="Tom And Jerry, Hello World, Tom !";// 删除从 0 位置开始的 3 个字符// 然后在 0 位置处插入 Jack 字符串// 返回的索引仍然是字符串本身string s2=s1.replace(0,3,"Jack");// 打印 s1 和 返回的字符串cout<<"s1 ...
/---string转int---/ string str= "123456789"; stringstream sstream(str); int tmp; sstream>>tmp; cout<<tmp<<endl; // 输出结果123456789 /---int转string---/ int tmp=123456; stringstream t; string s; t<<tmp; t>>s; cout<<s<<endl...
each mapped to its string counterpart// Note: value_type is a pair for maps...theMap.insert(INT2STRING::value_type(0,"Zero")); theMap.insert(INT2STRING::value_type(1,"One")); theMap.insert(INT2STRING::value_type(2,"Two")); theMap.insert(INT2STRING::value_type(3,"Three...
to_string(val):val可以是任何算术类型,将其转为string stoi 字符串s转为int stol字符串s转为long stof字符串s转为flout stod字符串s转为double 例子:将一个字符和数字混合的字符串按照原顺序分割为数字和字母的子字串 简单应用一个示例,将一个字符和数字混合的字符串按照原顺序分割为数字和字母的子字串 #inc...
each mapped to its string counterpart// Note: value_type is a pair for maps...theMap.insert(INT2STRING::value_type(0,"Zero")); theMap.insert(INT2STRING::value_type(1,"One")); theMap.insert(INT2STRING::value_type(2,"Two")); theMap.insert(INT2STRING::value_type(3,"Three"))...
#include <string> Or #include <bits/stdc++.h> C++ program to convert an integer to string #include <bits/stdc++.h>usingnamespacestd;intmain() {intn; cout<<"Input integer to convert\n"; cin>>n; string s=to_string(n); cout<<"Converted to string: "<<s<<endl;return0; } ...
tolower : 将字符串转为 小写字母 ; 2、代码示例 - string 类 transform 函数转换 代码示例 : #include "iostream" using namespace std; #include "string" #include "algorithm" int main() { string s1 = "Tom And Jerry"; // 将字符串转为大写字母 ...