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Turbo C 2.0、Borland C++库函数及用例(14) the\r\n"); cprintf("current text window, without moving the cursor.\
\r\n");
cprintf("Press any key to continue . . .");
gotoxy(14, 4);
getch();
clreol();
getch();
return 0;
}
函数名: clrscr
功 能: 清除文本模式窗口
用 法: void clrscr(void);
程序例:
#include <conio.h>int main(void)
{
int i;
clrscr();
for (i = 0; i < 20; i++)
cprintf("%d\r\n", i);
cprintf("\r\nPress any key to clear screen");
getch(); clrscr();
cprintf("The screen has been cleared!");
getch();
return 0;
}
函数名: coreleft
功 能: 返回未使用内存的大小
用 法: unsigned coreleft(void);
程序例:
#include <stdio.h>
#include <alloc.h>int main(void)
{
printf("The difference between the highest allocated \
block and\n");
printf("the top of the heap is: %lu bytes\n\
", (unsigned long) coreleft());
return 0;
}
函数名: cos
功 能: 余弦函数
用 法: double cos(double x);
程序例:#include <stdio.h>
#include <math.h>int main(void)
{
double result;
double x = 0.5; result = cos(x); printf("The cosine of %lf is %lf\n", x, result);
return 0;
}
函数名: cosh
功 能: 双曲余弦函数
用 法: dluble cosh(double x);
程序例:#include <stdio.h>
#include <math.h>int main(void)
{
double result;
double x = 0.5; result = cosh(x); printf("The hyperboic cosine of %lf is %lf\n",x,result);
return 0;
}
函数名: country
功 能: 返回与国家有关的信息
用 法: struct COUNTRY *country( int countrycode,
struct country *country);
程序例:#include <dos.h>
#include <stdio.h>#define USA 0int main(void)
{
struct COUNTRY country_info; country(USA, &country_info);
printf("The currency symbol for the USA is: %s\n",
country_info.co_curr);
return 0;
}
函数名: cprintf
功 能: 送格式化输出至屏幕
用 法: int cprintf(const char *format[, argument, ...]);
程序例:#include <conio.h>int main(void)
{
/* clear the screen */
clrscr(); /* create a text window */
window(10, 10, 80, 25); /* output some text in the window */
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