I have a problem reading characters from keyboard with the scanf function.
Here there is a little piece of code:
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
/* The last 3 libraries are included because in the real program I use some... (4 Replies)
hi i am a beginner to C
i have encountered a problem with my assignment, and i have researched it on the internet, but unfortunately i didn't find anything related to that.
i am writing a simple program that takes user's input by prompt command, and parse the whole line into an array of... (1 Reply)
hi all
i have a program in C (Unix Solaris 5.7) and i want to read a string from keyboard, but the "scanf" doesn´t reads spaces.
example:
....
char name;
....
printf("Enter your name: ");
scanf("%s",&name);
printf ("Your name is: %s", name);
and if i write Kevin Costner ... (4 Replies)
Hello everyone,
I hope someone is awake to help me on this..
hey How can I do something like this:
The user is asked is asked to enter an int value, but I want to provide a default value on stdout, which they can back space and change it to whatever they want..
for e.g:
Enter the... (4 Replies)
Im a newbie to programming language, i found tat there r these function called printf and putchar() as well as scanf and getchar(), im curious abt why do dey hav these 2 different function although dey r doing the same instruction? :confused: (13 Replies)
$ cc Array.c
Array.c: In function ‘main’:
Array.c:23: warning: passing argument 1 of ‘scanf’ makes po
Array.c:25: error: expected expression before ‘return’
Array.c:29: error: expected expression before ‘return’
Array.c: At top level:
Array.c:44: error: expected ‘)’ before ‘&’ token... (8 Replies)
I have a problem with scanf() for string pointer as member of a struct.
#include <stdio.h>
#include <stdlib.h>
struct Student {
int studentNumber;
int phoneNumber;
char *studentName; //line 7
// char studentName; //line 8
};
int... (10 Replies)
Discussion started by: yifangt
10 Replies
LEARN ABOUT REDHAT
err_error_string_n
ERR_error_string(3) OpenSSL ERR_error_string(3)NAME
ERR_error_string, ERR_error_string_n, ERR_lib_error_string, ERR_func_error_string, ERR_reason_error_string - obtain human-readable error
message
SYNOPSIS
#include <openssl/err.h>
char *ERR_error_string(unsigned long e, char *buf);
char *ERR_error_string_n(unsigned long e, char *buf, size_t len);
const char *ERR_lib_error_string(unsigned long e);
const char *ERR_func_error_string(unsigned long e);
const char *ERR_reason_error_string(unsigned long e);
DESCRIPTION
ERR_error_string() generates a human-readable string representing the error code e, and places it at buf. buf must be at least 120 bytes
long. If buf is NULL, the error string is placed in a static buffer. ERR_error_string_n() is a variant of ERR_error_string() that writes
at most len characters (including the terminating 0) and truncates the string if necessary. For ERR_error_string_n(), buf may not be NULL.
The string will have the following format:
error:[error code]:[library name]:[function name]:[reason string]
error code is an 8 digit hexadecimal number, library name, function name and reason string are ASCII text.
ERR_lib_error_string(), ERR_func_error_string() and ERR_reason_error_string() return the library name, function name and reason string
respectively.
The OpenSSL error strings should be loaded by calling ERR_load_crypto_strings(3) or, for SSL applications, SSL_load_error_strings(3) first.
If there is no text string registered for the given error code, the error string will contain the numeric code.
ERR_print_errors(3) can be used to print all error codes currently in the queue.
RETURN VALUES
ERR_error_string() returns a pointer to a static buffer containing the string if buf == NULL, buf otherwise.
ERR_lib_error_string(), ERR_func_error_string() and ERR_reason_error_string() return the strings, and NULL if none is registered for the
error code.
SEE ALSO err(3), ERR_get_error(3), ERR_load_crypto_strings(3), SSL_load_error_strings(3)ERR_print_errors(3)HISTORY
ERR_error_string() is available in all versions of SSLeay and OpenSSL. ERR_error_string_n() was added in OpenSSL 0.9.6.
0.9.7a 2000-09-14 ERR_error_string(3)
03-25-2010
So: