C语言的函数!

内财数模协会 · 发表于 2004-5-8 17:42:50

<

>函数名: getcolor
功能: 返回当前画线颜色
用法: int far getcolor(void);
程序例: <

>#include <graphics.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <conio.h> <

>int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int color, midx, midy;
char colname[35]; /* initialize graphics and local variables */
initgraph(&gdriver, &gmode, ""); /* read result of initialization */
errorcode = graphresult();
/* an error occurred */
if (errorcode != grOk)
{
 printf("Graphics error: %s\n",
 grapherrormsg(errorcode));
 printf("Press any key to halt:");
 getch();
/* terminate with an error code */
 exit(1);
} midx = getmaxx() / 2;
midy = getmaxy() / 2;
setcolor(getmaxcolor()); /* for centering text on the display */
settextjustify(CENTER_TEXT, CENTER_TEXT); /* get the current drawing color */
color = getcolor(); /* convert color value into a string */
itoa(color, colname, 10);
strcat(colname,
" is the current drawing color."); /* display a message */
outtextxy(midx, midy, colname); /* clean up */
getch();
closegraph();
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:07

<

>函数名: getcurdir
功能: 取指定驱动器的当前目录
用法: int getcurdir(int drive, char *direc);
程序例: <

>#include <dir.h>
#include <stdio.h>
#include <string.h> <

>char *current_directory(char *path)
{
strcpy(path, "X:\\"); /* fill string with form of response: X:\ */
path[0] = 'A' + getdisk(); /* replace X with current drive letter */
getcurdir(0, path+3); /* fill rest of string with current directory */
return(path);
} int main(void)
{
char curdir[MAXPATH]; current_directory(curdir);
printf("The current directory is %s\n", curdir); return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:16

<

>函数名: getcwd
功能: 取当前工作目录
用法: char *getcwd(char *buf, int n);
程序例: <

>#include <stdio.h>
#include <dir.h> <

>int main(void)
{
char buffer[MAXPATH]; getcwd(buffer, MAXPATH);
printf("The current directory is: %s\n", buffer);
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:25

<

>函数名: getdate
功能: 取DOS日期
用法: void getdate(struct *dateblk);
程序例: <

>#include <dos.h>
#include <stdio.h> <

>int main(void)
{
struct date d; getdate(&d);
printf("The current year is: %d\n",
d.da_year);
printf("The current day is: %d\n",
d.da_day);
printf("The current month is: %d\n",
d.da_mon);
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:37

<

>函数名: getdefaultpalette
功能: 返回调色板定义结构
用法: struct palettetype *far getdefaultpalette(void);
程序例: <

>#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h> <

>int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int i; /* structure for returning palette copy */
struct palettetype far *pal=(void *) 0; /* initialize graphics and local variables */
initgraph(&gdriver, &gmode, ""); /* read result of initialization */
errorcode = graphresult();
/* an error occurred */
if (errorcode != grOk)
{
 printf("Graphics error: %s\n",
 grapherrormsg(errorcode));
 printf("Press any key to halt:");
 getch();
/* terminate with an error code */
 exit(1);
} setcolor(getmaxcolor()); /* return a pointer to the default palette */
pal = getdefaultpalette(); for (i=0; i<16; i++)
{
 printf("colors[%d] = %d\n", i,
 pal->colors);
 getch();
} /* clean up */
getch();
closegraph();
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:46

<

>函数名: getdisk
功能: 取当前磁盘驱动器号
用法: int getdisk(void);
程序例: <

>#include <stdio.h>
#include <dir.h> <

>int main(void)
{
int disk; disk = getdisk() + 'A';
printf("The current drive is: %c\n",
disk);
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:43:58

<

>函数名: getdrivername
功能: 返回指向包含当前图形驱动程序名字的字符串指针
用法: char *getdrivename(void);
程序例: <

>#include <graphics.h>
#include <stdlib.h>
#include <stdio.h>
#include <conio.h> <

>int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode; /* stores the device driver name */
char *drivername; /* initialize graphics and local variables */
initgraph(&gdriver, &gmode, ""); /* read result of initialization */
errorcode = graphresult();
/* an error occurred */
if (errorcode != grOk)
{
 printf("Graphics error: %s\n",
 grapherrormsg(errorcode));
 printf("Press any key to halt:");
 getch();
/* terminate with an error code */
 exit(1);
} setcolor(getmaxcolor()); /* get name of the device driver in use */
drivername = getdrivername(); /* for centering text on the screen */
settextjustify(CENTER_TEXT, CENTER_TEXT); /* output the name of the driver */
outtextxy(getmaxx() / 2, getmaxy() / 2,
 drivername); /* clean up */
getch();
closegraph();
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:44:08

<

>函数名: getdta
功能: 取磁盘传输地址
用法: char far *getdta(void);
程序例: <

>#include <dos.h>
#include <stdio.h> <

>int main(void)
{
char far *dta; dta = getdta();
printf("The current disk transfer \
address is: %Fp\n", dta);
return 0;
}

内财数模协会 · 发表于 2004-5-8 17:44:19

<

>函数名: getenv
功能: 从环境中取字符串
用法: char *getenv(char *envvar);
程序例: <

>#include <stdlib.h>
#include <stdio.h>
<

>int main(void)
{
char *s; s=getenv("COMSPEC"); /* get the comspec environment parameter */
printf("Command processor: %s\n",s); /* display comspec parameter */ return 0;
}

内财数模协会 · 发表于 2004-5-8 17:44:32

<

>函数名: getfat, getfatd
功能: 取文件分配表信息
用法: void getfat(int drive, struct fatinfo *fatblkp);
程序例: <

>#include <stdio.h>
#include <dos.h> <

>int main(void)
{
struct fatinfo diskinfo;
int flag = 0; printf("Please insert disk in drive A\n");
getchar(); getfat(1, &diskinfo);
/* get drive information */ printf("\nDrive A: is ");
switch((unsigned char) diskinfo.fi_fatid)
{
 case 0xFD:
printf("360K low density\n");
break; case 0xF9:
printf("1.2 Meg high density\n");
break; default:
printf("unformatted\n");
flag = 1;
} if (!flag)
{
 printf(" sectors per cluster %5d\n",
 diskinfo.fi_sclus);
 printf(" number of clusters %5d\n",
 diskinfo.fi_nclus);
 printf(" bytes per sector %5d\n",
 diskinfo.fi_bysec);
} return 0;
}

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C语言的函数!

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