How cin.get() funciton will works

In 13th line of code,why we use cin.get() function.And what is the difference between cin.get() with parameters and without parameters

hello @kireeti_kesani cin.get() with parameters is used to take the input upto desired length like :
char name[25];
cin.get(name, 25);
cout << name;
input: Geeks for Geeks
output: Geeks for Geeks
second example:
char name[100];
cin.get(name, 3);
cout << name
input: GFG
Output: GF
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