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Function Details : islower

intislower(int c) ;

Return Type : int

Integer type (typically 4 bytes, -2,147,483,648 to 2,147,483,647)

Read about return values of islower function .

1st Parameter Type : int

Integer type (typically 4 bytes, -2,147,483,648 to 2,147,483,647)

1st Parameter

The character to be tested, passed as an `unsigned char` cast to an `int`, or `EOF`

Read more about parameters of islower in parameters section

The islowerfunction in C language Checks whether the character is lowercase.

The islower function tests whether c is a lowercase letter. In the default C locale, it includes the letters a through z.

The islowerfunction takes 1 parameter:

•
int `c`: The character to be tested, passed as an `unsigned char` cast to an `int`, or `EOF`

Checks if the given character `c` is a lowercase alphabetic letter (`a-z`). Returns a nonzero value if `c` is lowercase, and `0` otherwise.

The islower function return value :

Returns non-zero if the character is a lowercase letter, 0 otherwise

Output

This example demonstrates basic usage of islower with various characters.