问:实现在另一个数组中查找子字符串
#define _CRT_SECURE_NO_WARNINGS 1 #include <stdio.h> #include <assert.h> #include <string.h> int main() { char* p1 = "abcdefgdef"; char* p2 = "def"; char* ret =strstr(p1, p2); if (ret == NULL) { printf("子串不存在\n"); } else { printf("%s\n", ret); } return 0; }
#define _CRT_SECURE_NO_WARNINGS 1 #include <stdio.h> #include <assert.h> #include <string.h> char* my_strstr(char* p1, char* p2) { assert(p1); assert(p2); char* s1 = NULL; char* s2 = NULL; char* cur =(char*)p1; if (!*p2) return (char*)p1; while (*cur) { s1 = cur; s2 = (char*)p2; while (*s1 && *s2 &&(*s1 == *s2)) { s1++; s2++; } if (!*s2) return cur; cur++; } return NULL; } int main() { char* p1 = "abcdefaa"; char* p2 = "def"; char* ret = my_strstr(p1, p2); if (ret == NULL) printf("子串不存在!\n"); else printf("%s\n", ret); return 0; }
标签:p2,p1,s2,代码,练习,ret,41,char,include From: https://www.cnblogs.com/ayue6/p/17795772.html