C++ List emplace_front() Usage and Example

C++ List (List)

C ++The list emplace_front function adds a new element to the beginning of the list, and the size of the container increases by one.

The following figure shows the working principle of this function:

Syntax

void emplace_front(value_type val);

Parameter

val: To insert the value at the beginning of the list.

Return value

It does not return any value.

Example

Let's look at a simple example

Example

#include#includeusing namespace std;
int main()
{
listli;
list::iterator itr;
li.emplace_front("language");
li.emplace_front("programming");
li.emplace_front("a");
li.emplace_front("is");
li.emplace_front("C");
for(itr=li.begin();itr!=li.end();++itr)
cout <<*itr << " ";
　return 0;
}

Output:

C is a programming language.

In this example, the emplace_front() function adds a new different string to the list li, and the output becomes 'C is a programming language.'.

C++ List (List)