输入一个字符串,同时输入帧头和帧尾(可以是多个字符),将该字符串中合法的帧识别出来。 提示：帧头和帧尾分别是head和tail 。字符串 ”asdheadhauboisoktail”中headhauboisoktail是合法帧
#include <stdio.h> #include <string.h> int fun(char *ptr,char *head,char *tail) { char *temp; while(*ptr != '\0') { if(strncmp(ptr,head,strlen(head)) == 0) { temp = ptr; ptr+=strlen(head); while(*ptr != '\0') { if(strncmp(ptr,tail,strlen(tail)) == 0) { *(ptr+strlen(tail)) = '\0'; printf("%s\n",temp); return 0; } ptr++; } printf("find head not find tail!\n"); break; } else ptr++; } return 0; } int main() { char src[100]; char head[20]; char tail[20]; printf("please input string:\n"); scanf("%s",src); printf("please input head:\n"); scanf("%s",head); printf("please input tail:\n"); scanf("%s",tail); printf("the result:\n"); fun(src,head,tail); return 0; }