【FROM MSDN && 百科】

原型：char *strstr(const char *str1, const char *str2);

#include<string.h>

找出str2字符串在str1字符串中第一次出現的位置（不包括str2的串結束符）。返回該位置的指針，如找不到，返回空指針。

Returns a pointer to the first occurrence of strSearch in str, or NULL if strSearch does not appear in str. If strSearch points to a string of zero length, the function returns str.

DEMO: mystrstr

1. //#define FIRST_DEMO
2. #define SECOND_DEMO
4. #ifdef FIRST_DEMO
5. #include <stdio.h>
6. #include <conio.h>
7. #include <string.h>
8. int main(void)
9. {
10. char *s="Golden Global View";
11. char *l="lob";
12. char *p;
13. system("cls");
14. p=strstr(s,l);
15. if (p!=NULL)
16. {
17. printf("%s\n",p);
18. }
19. else
20. {
21. printf("Not Found!\n");
22. }
24. getch();
25. return 0;
26. }
27. #elif defined SECOND_DEMO
28. /*從字串” string1 onexxx string2 oneyyy”中尋找”yyy”*/
29. #include <stdio.h>
30. #include <conio.h>
31. #include <string.h>
32. int main(void)
33. {
34. char *s="string1 onexxx string2 oneyyy";
35. char *p;
36. p=strstr(s,"string2");
37. printf("%s\n",p);
38. if (p==NULL)
39. {
40. printf("Not Found!\n");
41. }
42. p=strstr(p,"one");
43. printf("%s\n",p);
44. if (p==NULL)
45. {
46. printf("Not Found!\n");
47. }
48. p+=strlen("one");
49. printf("%s\n",p);
51. getch();
52. return 0;
53. }
54. #endif
    

char *strstr(const char *str1, const char *str2);