C/C++——С±à̸CÓïÑÔº¯ÊýÄÇЩÊÂ(8)
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1. gcvtº¯Êý
gcvtº¯ÊýµÄ¹¦ÄÜÊǰѸ¡µãÊýת»»³É×Ö·û´®£¬ÆäÓ÷¨ÊÇ£ºchar *gcvt(double value, int ndigit, char *buf);³ÌÐòÀý×ÓÈçÏ£º
#include <stdlib.h>
#include <stdio.h>
int main(void)
{
char str[25];
double num;
int sig = 5; /* significant digits */
/* a regular number */
num = 9.876;
gcvt(num, sig, str);
printf("string = %s\n", str);
/* a negative number */
num = -123.4567;
gcvt(num, sig, str);
printf("string = %s\n", str);
/* scientific notation */
num = 0.678e5;
gcvt(num, sig, str);
printf("string = %s\n", str);
return(0);
}
2. getcrº¯Êý
getcrº¯ÊýµÄ¹¦ÄÜÊÇ´ÓÁ÷ÖÐÈ¡×Ö·û£¬ÆäÓ÷¨ÊÇ£ºint getc(FILE *stream); ³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
int main(void)
{
char ch;
printf("Input a character:");
/* read a character from the
standard input stream */
ch = getc(stdin);
printf("The character input was: '%c'\n",
ch);
return 0;
}
3. getftimeº¯Êý
getftimeº¯ÊýµÄ¹¦ÄÜÊÇÈ¡ÎļþÈÕÆÚºÍʱ¼ä£¬ÆäÓ÷¨ÊÇ£ºint getftime(int handle, struct ftime *ftimep);³ÌÐòÀý×ÓÈçÏ£º
#include <stdio.h>
#include <io.h>
int main(void)
{
FILE *stream;
struct ftime ft;
if ((stream = fopen("TEST.$$$",
"wt")) == NULL)
{
fprintf(stderr,
&nbs
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Á´±í¶¨Òå¼°²Ù×÷µÄÔ´Îļþ£ºemployee.h
//
#pragma once
#ifndef __EMPLOYEE_H__
#define __EMPLOYEE_H__
#include<stdio.h>
#include<malloc.h>
typedef struct employee{
int id;
int age;
int salary;
}EmpType;
typedef struct Node{
EmpType data;
struct Node *next;
}L ......
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ÄÚÈÝ£ºIntroduction ºÍ Error Reporting
1. glibc ËùʵÏÖÈ«²¿»ò²¿·Ö¹æ·¶ÏµĹ¦ÄÜÓÐ
ISO C: The international standard for the C programming language.
POSIX: The ISO/IEC 9945 (aka IEEE 1003) standards for operating systems.
Berkeley Unix: BSD and SunOS.
SVID: The System V Interface Description.
X ......