Thanks Don and corona688!
I think my problem is my mis-understanding of the function putchar(c) so that I re-wrote it with putc() which helped me understand it.
Thanks a lot again!
i have a function:
char *pcCityIdToCountryName(ADMIN_DB_DATA *pstHEader, unit uiCityID)
this returns a pointer to CountryName if cityId is given.
to retrieve countryname i give:
char *CountryName;
CountryName = pcCityIdToCountryName(..................);
but when i compile it is giving :... (5 Replies)
Dear All,
Here I want to know why we put =0 in case of pure virtual function, why not =1, =2 or any thing else
Please send me answer any one as soon as possible. (1 Reply)
Hello all
im trying to build function that will return void function pointer
what is mean is ( not working )
the main function
void * myClass::getFunction(int type){
if(type==1)
return &myClass::Test1;
if(type==2)
return &myClass::Test2;
}
void myClass::Test1(){... (1 Reply)
Hi.
Problem: I have to parse the payload of a packet. The payload could be in Big Endian Format (network byte order) or little. That depends on a flag present in the header of the packet.
Solution: A horrible solution could be to check for that flag everytime I have to read a field in the... (11 Replies)
How can I print the memory address of a pointer using printf (or any other STDOUT functions?). I see in Linux its %p but not in unix, help?
thanks (5 Replies)
if i create an array of pointers to a structure "struct node" as:
struct node *r;
and create "n" number of "linked lists" and assign it to the various struct pointers r using some function with a return type as structure pointer as:
r=multiplty(.......) /*some parameters*/
is... (2 Replies)
Hi,
In the below C code,
#include <stdio.h>
void print() {
printf("Hello\n");
}
int main() {
void (*f)() = (void (*)()) print;
f();
(*f)();
}
I wonder, how the syntaxes "f()" and "(*f)()" are treated as same without any error? Is this an improvement or ANSI/ISO... (1 Reply)
I'm trying to write a programme which scans strings to find how many vowels they contain. I get an error saying that I'm trying to compare a pointer and an integer inif(*v == scanme){. How can I overcome this ? Also, the programme seems to scan only the first word of a string e.g.: if I type "abc... (1 Reply)
I am passing a char* to the function "reverse" and when I execute it with gdb I get:
Program received signal SIGSEGV, Segmentation fault.
0x000000000040083b in reverse (s=0x400b2b "hello") at pointersExample.c:72
72 *q = *p;
Attached is the source code.
I do not understand why... (9 Replies)
Discussion started by: jose_spain
9 Replies
LEARN ABOUT MOJAVE
putchar
PUTC(3) BSD Library Functions Manual PUTC(3)NAME
fputc, putc, putc_unlocked, putchar, putchar_unlocked, putw -- output a character or word to a stream
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <stdio.h>
int
fputc(int c, FILE *stream);
int
putc(int c, FILE *stream);
int
putc_unlocked(int c, FILE *stream);
int
putchar(int c);
int
putchar_unlocked(int c);
int
putw(int w, FILE *stream);
DESCRIPTION
The fputc() function writes the character c (converted to an ``unsigned char'') to the output stream pointed to by stream.
The putc() macro acts essentially identically to fputc(), but is a macro that expands in-line. It may evaluate stream more than once, so
arguments given to putc() should not be expressions with potential side effects.
The putchar() function is identical to putc() with an output stream of stdout.
The putw() function writes the specified int to the named output stream.
The putc_unlocked() and putchar_unlocked() functions are equivalent to putc() and putchar() respectively, except that the caller is responsi-
ble for locking the stream with flockfile(3) before calling them. These functions may be used to avoid the overhead of locking the stream
for each character, and to avoid output being interspersed from multiple threads writing to the same stream.
RETURN VALUES
The functions, fputc(), putc(), putchar(), putc_unlocked(), and putchar_unlocked() return the character written. If an error occurs, the
value EOF is returned. The putw() function returns 0 on success; EOF is returned if a write error occurs, or if an attempt is made to write
a read-only stream.
SEE ALSO ferror(3), flockfile(3), fopen(3), getc(3), putwc(3), stdio(3)STANDARDS
The functions fputc(), putc(), and putchar(), conform to ISO/IEC 9899:1990 (``ISO C90''). The putc_unlocked() and putchar_unlocked() func-
tions conform to IEEE Std 1003.1-2001 (``POSIX.1''). A function putw() function appeared in Version 6 AT&T UNIX.
BUGS
The size and byte order of an int varies from one machine to another, and putw() is not recommended for portable applications.
BSD January 10, 2003 BSD