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# C - strlen function

## Synopsis:

    #include <stdio.h>

    int strlen(char *src );

## Description:

The strlen function calculates the length, in bytes, of src. This calculation does not include the null terminating character.

## Return Value

The strlen function returns the length of src.

## Example

    #include <stdio.h>

    int main() {
      char string1[20];
      char string2[20];

      strcpy(string1, "Hello");
      strcpy(string2, "Hellooo");

      printf("Length of string1 : %d\n", strlen( string1 ));
      printf("Length of string2 : %d\n", strlen( string2 ));

      return 0;
    }

It will proiduce following result:

    Length of string1 : 5
    Length of string2 : 7

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