【HK】C语言库函数（S类字母）

函数名: setjmp

功能: 非局部转移

程序例:
#include
#include
#include
void subroutine(void);
jmp_buf jumper;
int main(void)
{
int value;
value = setjmp(jumper);
if (value != 0)
{
printf("Longjmp with value %d
", value);

exit(value);
}
printf("About to call subroutine ...
");
subroutine();
return 0;
}

void subroutine(void)
{
longjmp(jumper,1);
}

函数名: setlinestyle

功 能: 设置当前画线宽度和类型

用 法: void far setlinestyle(int linestype, unsigned upattern);

程序例:
#include
#include
#include
#include
#include
/* the names of the line styles supported */
char *lname[] = {
"SOLID_LINE",
"DOTTED_LINE",
"CENTER_LINE",
"DASHED_LINE",
"USERBIT_LINE"
};
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode,
errorcode;
int style, midx, midy, userpat; char stylestr[40];
/* initialize graphics and local variables
*/ initgraph(&gdriver, &gmode, "");
/* read result of initialization */ errorcode = graphresult();
if (errorcode != grOk)
/* an error occurred */
{

printf("Graphics error: %s
", grapherrormsg(errorcode)); printf("Press any key to halt:"); getch();
exit(1); /* terminate with an error code */
}
midx = getmaxx() / 2;
midy = getmaxy() / 2;
/* a user defined line pattern */
/* binary: "0000000000000001" */ userpat = 1;
for (style=SOLID_LINE; style=USERBIT_LINE; style++) {
/* select the line style */ setlinestyle(style, userpat, 1);
/* convert style into a string */ strcpy(stylestr, lname[style]);
/* draw a line */
line(0, 0, midx-10, midy);
/* draw a rectangle */
rectangle(0, 0, getmaxx(),
getmaxy());
/* output a message */ outtextxy(midx, midy, stylestr);
/* wait for a key */
getch();
cleardevice();
}
/* clean up */
closegraph();
return 0;
}

函数名: setmem

功 能: 存值到存储区

用 法: void setmem(void *addr, int len, char value);