strlen

The strlen function returns the number of characters contained in a null terminated string. The function assumes that there is a null character at the end of the string, and if the string is not null terminated the result is undefined.

The strlen function expects only one argument, a pointer to the string that will be measured.

The following code shows an example of strlen use:

#include        
#include        

int main()
{
        char *str = "hello world";
        int str_length;
        str_length = strlen(str);
        printf("the length of the string is now '%s'\n", dest);
        return 0;
}

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