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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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C unsigned Ó÷¨

Àý£º#define NELE(a) (sizeof(a) / sizeof(a[0]))
int main() {
char str[] = {'E', 'M', 'C'};
for (int d=-1; d<=(NELE(str)-2);d++)
      printf("%c",str[d+1]);
return 0;
}
ÅжÏprintf£¨£©Êä³öµÄÊÇʲô£¬½á¹û¿ÉÄܳöºõÒâÁÏ£¬Ê²Ã´Ò²Ã»ÓÐÊä³ö£¬Ô­ÒòÄØ£¿Ô­Òò ......

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Õû¸öÔËÐÐÆÚ¼ä¶¼´æÔÚ¡£ÀýÈçÈ«¾Ö±äÁ¿£¬static ±äÁ¿¡£
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ÊýÖ´ÐнáÊøÊ±ÕâЩ´æ´¢µ¥Ôª×Ô¶¯±»ÊÍ·Å¡£Õ»ÄÚ´æ·ÖÅäÔËËãÄÚÖÃÓÚ´¦ÀíÆ÷µÄÖ¸Áî¼ ......

C/C++ÖеÄSplitº¯Êý

 C/C++ÖеÄSplitº¯ÊýÊÇstrtok()Æäº¯ÊýÔ­ÐÍÈçÏÂ:
char * strtok (char * str, const char * delimiters);
º¯Êý˵Ã÷
strtok()ÓÃÀ´½«×Ö·û´®·Ö¸î³ÉÒ»¸ö¸öƬ¶Î¡£²ÎÊýstrÖ¸ÏòÓû·Ö¸îµÄ×Ö·û´®£¬²ÎÊýdelimitersÔòΪ·Ö¸î×Ö·û´®£¬µ±strtok()ÔÚ²ÎÊý
strµÄ×Ö·û´®Öз¢ÏÖµ½²ÎÊýdelimitersµÄ·Ö¸î×Ö·ûʱÔò»á½«¸Ã×Ö·û¸ÄΪ'\0'×Ö·û ......

C_ÅжÏÓï¾äifÓëelseµÄǶÌ×ʹÓÃ

 Ô´Âë:
# include <stdio.h>
 
int main()
{
    /* sex´ú±íÊäѪÕßµÄÐÔ±ð£¬weight´ú±íÊäѪÕßµÄÌåÖØ£¬cubage´ú±íÊäѪÁ¿ */
    int sex, weight, cubage;
    printf("Çë¸ø³öÊäѪÕßµÄÐÔ±ð£¨Å®ÐÔΪ¸ºÊý£©ºÍÌåÖØ£º(ÓöººÅ¸ô¿ª)");
 &nbs ......

C_ʹÓÃwhileÓï¾äÇóÁ½ÕûÊýµÄ×îС¹«±¶ÊýÓë×î´ó¹«Ô¼Êý

 Ô´Âë:
# include <stdio.h>
 
int main()
{
    int x, y, num1, num2, temp;
    printf("ÇëÊäÈëÁ½¸öÕýÕûÊý£º\n");
    scanf("%d %d", &num1, &num2);
 
    if(num1 < num2)
   ......
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