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Function Details : isdigit

intisdigit(int c) ;

Return Type : int

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

Read about return values of isdigit 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 isdigit in parameters section

The isdigitfunction in C language Checks whether the character is a decimal digit.

The isdigit function tests whether c is a decimal digit character (0 through 9). This function is locale-independent.

The isdigitfunction 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 decimal digit (0–9). Returns a nonzero value if `c` is a digit, and `0` otherwise.

The isdigit function return value :

Returns non-zero if the character is a digit (0-9), 0 otherwise

Output

This example demonstrates basic usage of isdigit with various characters.