C++ String resize() function

C++ String resize function tutorial for beginners and professionals with examples on constructor, if-else, switch, break, continue, comments, arrays, object and class, exception, static, structs, inheritance, aggregation etc.

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C++ String resize()

This function is used to resize the string to the length of k characters.

Syntax

Consider a string object str. To resize the string object, syntax would be :

str.resize(k,c);

Parameters

This function contains two parameters.

k : k is number of characters specified in the first parameter. It resizes the string such that string contains k characters.

If k is shorter than the length of the string, string length shortened to the length specified by k, removing all the characters beyond k.

If k is larger than the length of the string, string length extended to the length specified by k.

c : c is a new character to be added in a new space, if k is larger than the length of the string. This is optional parameter.

Return value

It does not return any value.

Example 1

When k is shorter than length of the specified string.

#include<iostream>
using namespace std;
int main()
{
string str= "TheDeveloperBlog";
cout<<"String is :"<<str<<?\n?;
str.resize(4);
cout<<"After resizing, string is "<<str;
return 0;
 }

Example 2

When k is greater than the length of the specified string.

#include<iostream>
using namespace std;
int  main()
{
string str ="TheDeveloperBlog";
cout<<"String value is :"<<str<<'\n';
str.resize(19,"tutorial");
cout<<"After resizing, string value is :"<<str;
return 0;
}

Output:

String value is TheDeveloperBlog
After resizing, string value is TheDeveloperBlog tutorial

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