C++的append()方法介绍 |21xrx.com

C++的append()方法介绍

2023-06-27 10:11:40 深夜i -- --

C++ append()方法字符串拼接

C++的append()方法是用来在字符串的末尾添加新的字符或字符串的。这个方法是在字符串类中定义的，使用起来非常方便，可以将一个或多个字符或字符串添加到一个字符串的末尾。append()方法返回的是修改后的字符串，可以将其存储到一个字符串变量中。

Syntax for append() Method:

str1.append(str2);

Here, str1 is the original string and str2 is the string to be appended to str1.

The append() method can also be used to append a character to a string like this:

str1.append('a');

In this case, the character 'a' will be appended to the end of the original string.

The append() method can be very useful when working with strings in C++. It can help to simplify code and make it easier to manipulate strings. Additionally, it can be used in a variety of different contexts, such as when reading input from the user or when generating output in a program.

A sample program using append() method:

#include

using namespace std;

int main()

{

string str1 = "Hello";

string str2 = "World";

str1.append(str2);

cout << "New String is: " << str1;

return 0;

}

In this program, we create two strings, str1 and str2. Then, we append str2 to str1 using the append() method. Finally, we print out the modified string to the console.

In conclusion, the append() method is a powerful tool for manipulating strings in C++. Whether you are working on a small program or a large project, this method can be a valuable addition to your code.

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