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C - strlen function

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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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