Get the length of a string.
| #include <string.h> | Required only for function declarations |
size_t strlen( const char *string );
size_t _fstrlen( const char __far *string );
| string | Null-terminated string |
The strlen and _fstrlen functions return the length in bytes of string, not including the terminating null character ('\0').
The _fstrlen function is a model-independent (large-model) form of the strlen function. The behavior and return value of _fstrlen are identical to those of the model-dependent function strlen, with the exception that the argument is a far pointer.
These functions return the string length. There is no error return.
strlen
Standards:ANSI, UNIX
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:DOS32X
_fstrlen
Standards:None
16-Bit:DOS, QWIN, WIN, WIN DLL
32-Bit:None
/* STRLEN.C */
#include <string.h>
#include <stdio.h>
#include <conio.h>
#include <dos.h>
void main( void )
{
char buffer[61] = "How long am I?";
int len;
len = strlen( buffer );
printf( "'%s' is %d characters long\n", buffer, len );
}
'How long am I?' is 14 characters long