c语言库函数大全s-u

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1、C语言库函数大全S-U2009-11-2710:28函数名:sctdta功能：设置磁盘传输区地址用法：voidsetdta(charfar*dta);程序例：#include〈process.h>#ineludeftinclude#includeintmain(void){charline[80],far*save_dta;charbuffer[256]="SETDTAtest!structfebblk;intresult;/*getnewfilenamefromuser*/pr

2、intf(〃Enterafilenametocreate:z，);gets(line);/*parsethenewfilenametothedta*/parsfnm(line,&blk,1);printf("%d%s",blk・fcb_drivc,blk・feb_name);/*requestDOSservicestocreatefile*/if(bdosptr(0x16,&blk,0)==-1){perror(/zErrorcreatingf订e〃)；exit(1);}/*saveolddtaandsetnewdta*/sa

3、vedta=getdtaO;setdta(buffer);/*writenewrecords*/blk・fcb_rccsizc=256;blk.fcb_random=0L;result=randbwr(&blk,1);printf(z/result=%d〃，result);if(Iresult)printf("Write0K〃);elseperror(Z/Diskerror");exit(1);/*requestDOSservicestoclosethefile*/if(bdosptr(0x10,&blk,0)二二-1){

4、perror(z，Errorclosingf订e〃)；exit(1);}/*resettheolddta*/setdta(save_dta);return0;函数名：setfillpattern功能：选择用户定义的填充模式用法：voidfarsetfillpattern(charfar^upattern,intcolor);程序例：Sinclude〈graphics.h>^include#ineludettincludeintmain(void){/*requestautod

5、etection*/intgdriver二DETECT,gmode,errorcode;intmaxx,maxy;/*auserdefinedfillpattern*/charpattern[8]={0x00,0x70,0x20,0x27,0x24,0x24,0x07,0x00};/*initializegraphicsandlocalvariables*/initgraph(&gdrivcr，&gmode,〃“)；/*readresultofinitidlization*/errorcode=graphresult();if(e

6、rrorcode!=grOk)Aanerroroccurred*/{printf("Graphicserror:%s〃，grapherrormsg(errorcode));printf(z，Pressanykeytohalt:");maxx=getmaxx();maxy二getmaxy();setcolor(getmaxcolor());/*selectauserdefinedfillpattern*/setfilipattern(pattern,getmaxcolor());/*fillthescreenwiththepat

7、tern*/bar(0,0,maxx,maxy);/*cleanup*/getchO;closegraph();return0;}函数名：setpalette功能：改变调色板的颜色用法：voidfarsetpalette(intindex,intactural_color);程序例："#ineludeitinclude#ineludeftincludeintmain(void){/*requestautodetection*/intgdriver二DE

8、TECT,gmodc,errorcode;intcolor,maxcolor,ht;inty=10;charmsg[80];/*initializegraphicsandlocalvariables*/initgraph(&gdriver,&gmo