C language strlen() function: calculate the length of a string

Function name : strlen

Header file : <string.h>

Function prototype : int strlen(const char *str);

Function : Calculate string length

Parameters : const char *str is the string to be calculated

Return value : Returns the length of the string str

Program example : Calculate the length of string str

 #include<stdio.h>#include<string.h>intmain(void){char*str=www.dotcpp.com;intlen=strlen(str);printf(The length of %s is %dn,str, len);return0;}

Running results:

 The length of www.dotcpp.com is 14