用c 编写的笔记搜索程序

@{@XXX文本记录@}@           文本记录格式     xxx 搜索词条

#include <stdio.h>
#include <string.h>
#include <stdlib.h>int main(void){FILE *f=fopen("help.txt","r");if(f==NULL){perror("file");return -1;}char nr[2000];fseek(f,0,SEEK_END);long len=ftell(f);rewind(f);char txt2[len];for(int t=0;t<len;t++){txt2[t]=fgetc(f);}
//	fclose(f);int d=0;int  wz=0;char txt1[10];char bz1[10]; int t=0;int k=0;char txt[len];char bz[14];a:       scanf("%s",bz1);strcpy(bz,"@{@");memcpy(txt,txt2,len);	 strcat(bz,bz1);printf("%s\n",bz);d=0;wz=0;memset(nr,0,2000);for(int t=0;t<(len-4);t++){if(t==(len-3))  break;if(((txt[t]=='@')&&(txt[t+1]=='{')&&(txt[t+2]=='@'))||(wz==1)){wz=1;nr[d]=txt[t];d++;}if((txt[t]='@')&&(txt[t+1]=='}')&&(txt[t+2]=='@')) {d=0; 	   wz=0;memset(txt1,0,10);	       memcpy(txt1,nr,strlen(bz));if(memcmp(bz,txt1,strlen(bz))==0){system("clear");printf("%s\n",nr);memset(nr,0,2000);memset(bz,0,10);goto a;}memset(nr,0,2000);}}puts("没有匹配函数");goto a;return 0;
}