C++ String find_first_of()

This function is used for finding the location of first occurrence of the specified characters.

Syntax

Consider string str1 and str. Syntax would be :

Parameters

str : string containing characters to be searched for.

pos : It defines the position at which to start the search.

n : Number of characters identifying characters to be searched for.

ch : It defines the character which is to be searched

Return value

It returns the position of the searched character.

Examples 1

Let's see the simple example.

Output:

String contains : Dancing is my favorite hobby
Position of the first occurrence of the string favorite is 1

Examples 2

Let's see the simple example when the position at which to start the search is specified.

Output:

String contains : Welcome to the programming world
Now, start the search from the second position and we find the first occurrence of the 'programming' is : 4

Examples 3

Let's see the simple example to find the position of the first occurrence of a single character.

Output:

String contains javatpoint tutorial
Position of the first occurrence of 'a' character is : 1