生活随笔
收集整理的這篇文章主要介紹了
C语言之strstr函数
小編覺得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.
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(xiàn)的位置（不包括str2的串結(jié)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 instr . If?strSearch ?points to a string of zero length, the function returns?str .
DEMO: mystrstr
[cpp] ?view plaincopy
#include?<stdio.h> ?? #include?<conio.h> ?? #include?<string.h> ?? #include?<stdlib.h> ?? #pragma?warning?(disable:4996) ?? char ?*mystrstr( char ?*s1, char ?*s2);?? int ?main( void )?? {?? ????char ?*s= "Golden?Global?View" ;?? ????char ?*l= "ob" ;??? ?? ????char ?*p;?? ????system("cls" );?? ????p=mystrstr(s,l);?? ????if ?(p!=NULL)?? ????{?? ????????printf("%s\n" ,p);?? ????}?? ????else ?? ????{?? ????????printf("Not?Found!\n" );?? ????}?? ????getch();?? ????return ?0;?? }?? ?? char ?*mystrstr( char ?*s1, char ?*s2)?? {?? ????int ?n;?? ????if ?(*s2)?????????????????????? ?? ????{?? ????????while (*s1)????????????????? ????????{?? ????????????for ?(n=0;*(s1+n)==*(s2+n);n++)?? ????????????{?? ????????????????if ?(!*(s2+n+1))???????????? ?? ????????????????{?? ????????????????????return ?( char *)s1;?? ????????????????}?? ????????????}?? ????????????s1++;?? ????????}?? ????????return ?NULL;?? ????}?? ????else ?? ????{?? ????????return ?( char *)s1;?? ????}?? }??
DEMO:
[cpp] ?view plaincopy
?? #define?SECOND_DEMO ?? ?? #ifdef?FIRST_DEMO ?? #include?<stdio.h> ?? #include?<conio.h> ?? #include?<string.h> ?? int ?main( void )?? {?? ????char ?*s= "Golden?Global?View" ;?? ????char ?*l= "lob" ;?? ????char ?*p;?? ????system("cls" );?? ????p=strstr(s,l);?? ????if ?(p!=NULL)?? ????{?? ????????printf("%s\n" ,p);?? ????}?? ????else ?? ????{?? ????????printf("Not?Found!\n" );?? ????}?? ?? ????getch();?? ????return ?0;?? }?? #elif?defined?SECOND_DEMO ?? ?? #include?<stdio.h> ?? #include?<conio.h> ?? #include?<string.h> ?? int ?main( void )?? {?? ????char ?*s= "string1?onexxx?string2?oneyyy" ;?? ????char ?*p;?? ????p=strstr(s,"string2" );?? ????printf("%s\n" ,p);?? ????if ?(p==NULL)?? ????{?? ????????printf("Not?Found!\n" );?? ????}?? ????p=strstr(p,"one" );?? ????printf("%s\n" ,p);?? ????if ?(p==NULL)?? ????{?? ????????printf("Not?Found!\n" );?? ????}?? ????p+=strlen("one" );?? ????printf("%s\n" ,p);?? ?? ????getch();?? ????return ?0;?? }?? #endif ?? 總結(jié)
以上是生活随笔 為你收集整理的C语言之strstr函数 的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。
如果覺得生活随笔 網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔 推薦給好友。
