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# include <math.h>
# include <stdio.h> /* Êýѧº¯Êý¿â */
int main()
{
/* ÓÃs±íʾ¶àÏîʽµÄÖµ£¬ÓÃt±íʾÿһÏîµÄÖµ */
double s, t, x; // ´Ë´¦ÓÃË«¾«¶ÈÉùÃ÷±äÁ¿
int n;
printf("please input x: ");
scanf("%lf", &x); // £¥lf ´ú±íÓÃË«¾«¶ÈÊäÈë
/* ¸³³õÖµ */
t = x;
n = 1;
s = x;
/* ½øÐеþ¼ÓÔËËã */
do
{
n = n + 2 ;
t = t * (-x*x)/((float)(n)-1)/(float)(n);
s = s + t;
} while (fabs(t)>=1e-8); // ±¾À´ÊÇÒª´óÓÚ0,µ«Ò²¿É´óÓÚÒ»¸öºÜСµÄÊý¼´¿É
printf("sin(%f) = %lf\n", x, s);
return 0;
}
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Ô´Âë:
# include <stdio.h>
int main()
{
/* »»Ðзû'\n'£¬ÓÃÓÚÊä³ö»»ÐÐ */
printf("How are you?\n");
printf("I am fine.\n\n");
/* ºáÏòÌø¸ñ·û'\t'£¬Ê¹Ìøµ½ÏÂÒ»¸öÊä³öÇø */
  ......
Ô´Âë:
# include <stdio.h>
int main()
{
int i, j, k;
int m, n, p;
i = 8;
j = 10;
k = 12;
/* ×ÔÔöÔÚ²Ù×÷Êý֮ǰ */
  ......