C语言函数大全(b开头)

函数名: bar

功能: 画一个二维条形图

用法: void far bar(int left, int top, int right, int bottom);

程序例:

#include
#include
#include
#include
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int midx, midy, i;
/* initialize graphics and local variables */
initgraph(&gdriver, &gmode, "");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1); /* terminate with an error code */
}
midx = getmaxx() / 2;
midy = getmaxy() / 2;
/* loop through the fill patterns */
for (i=SOLID_FILL; i
{
/* set the fill style */
setfillstyle(i, getmaxcolor());
/* draw the bar */
bar(midx-50, midy-50, midx+50,
midy+50);
getch();
}
/* clean up */
closegraph();
return 0;
}

函数名: bar3d

功能: 画一个三维条形图

用法: void far bar3d(int left, int top, int right, int bottom,

int depth, int topflag);

程序例:

#include
#include
#include
#include
int main(void)
{
/* request auto detection */
int gdriver = DETECT, gmode, errorcode;
int midx, midy, i;
/* initialize graphics, local variables */
initgraph(&gdriver, &gmode, "");
/* read result of initialization */
errorcode = graphresult();
if (errorcode != grOk) /* an error occurred */
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1); /* terminate with error code */
}
midx = getmaxx() / 2;
midy = getmaxy() / 2;
/* loop through the fill patterns */
for (i=EMPTY_FILL; i
{
/* set the fill style */
setfillstyle(i, getmaxcolor());
/* draw the 3-d bar */
bar3d(midx-50, midy-50, midx+50, midy+50, 10, 1);
getch();
}
/* clean up */
closegraph();
return 0;
}

时间: 2024-10-24 18:55:21

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C语言函数大全(c开头)

函数名: cabs 功能: 计算复数的绝对值 用法: double cabs(struct complex z); 程序例: #include #include int main(void) { struct complex z; double val; z.x = 2.0; z.y = 1.0; val = cabs(z); printf("The absolute value of %.2lfi %.2lfj is %.2lf", z.x, z.y, val); return 0;

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C语言函数大全(e开头)

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函数名: harderr 功能: 建立一个硬件错误处理程序 用法: void harderr(int (*fptr)()); 程序例: /*This program will trap disk errors and prompt the user for action. Try running it with no disk in drive A: to invoke its functions.*/ #include #include #include #define IGNORE 0 #d

C语言函数大全(i开头)

函数名: imagesize 功能: 返回保存位图像所需的字节数 用法: unsigned far imagesize(int left, int top, int right, int bottom); 程序例: #include #include #include #include #define ARROW_SIZE 10 void draw_arrow(int x, int y); int main(void) { /* request autodetection */ int gdri

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函数名: kbhit 功能: 检查当前按下的键 用法: int kbhit(void); 程序例: #include int main(void) { cprintf("Press any key to continue:"); while (!kbhit()) /* do nothing */ ; cprintf("\r\nA key was pressed...\r\n"); return 0; } 函数名: keep 功能: 退出并继续驻留 用法: void

C语言函数大全(l开头)

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