C語言的範例 –改變背景顏色
題目:Press any key to change color, do you want to try it. Please hurry up!
1.程式分析:
2.程式源代碼:
#include
void main(void)
{
int color;
for (color = 0; color < 8; color++)
{
textbackground(color);/*設置文本的背景顏色*/
cprintf("This is color %d\r\n", color);
cprintf("Press any key to continue\r\n");
getch();/*輸入字元看不見*/
}
}
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題目:一個5位數,判斷它是不是回文數。即12321是回文數,個位與萬位相同,十位與千位相同。
1.程式分析:
2.程式源代碼:
main( )
{
long ge,shi,qian,wan,x;
scanf("%ld",&x);
wan=x/10000;
qian=x%10000/1000;
shi=x%100/10;
ge=x%10;
if (ge==wan&&shi==qian)/*個位等於萬位並且十位等於千位*/
printf("this number is a huiwen\n");
else
printf("this number is not a huiwen\n");
}