<pre name="code" class="cpp"><pre name="code" class="cpp">#define _CRT_SECURE_NO_WARNINGS #include<stdio.h> #include<stdlib.h> #include <string.h> char **pp = NULL; // 存储指针数组的地址 void initDataToMemory(char *path) { pp = (char **)malloc(sizeof(char *)* 13180807); FILE *pf = fopen(path, "r"); if (pf == NULL) { printf("Fail!\n"); } else { for (int i = 0; i < 13180807; i++) { char str[275] = { 0 }; //读取字符串缓冲区 fgets(str, 275, pf); //从文件中逐行读取字符串 int strlength = strlen(str) + 1;//获取要分配的字符串的长度 char *px = (char *)malloc(sizeof(char)*strlength); strcpy(px, str); px[strlength - 1] = '\0'; //设定最后一个字符为:'\0' pp[i] = px; //存储字符串的首地址到指针数组 } } printf("载入内存成功!\n"); } int getLine(char *path) { FILE *pf; pf = fopen(path, "r"); //读取 if (pf == NULL) { return -1; //获取失败 } else { int i = 0; while (!feof(pf)) //是否到文件末尾 //返回值为0,表示没有到文件末尾 { char str[275]; fgets(str, 275, pf); //读取一行 i++; //统计行数 } fclose(pf); return i; } } //共 13180807 行 *4/1024/1024 50M //申请指针,每一个指针指向一行 int getFileSize(char *path) { FILE *pf; pf = fopen(path, "r"); //读取 if (pf == NULL) { return -1; //获取失败 } else { fseek(pf, 0, SEEK_END); //到文件末尾 int num = ftell(pf); //文件开头到当前位置一共多少字节 fclose(pf); return num; } } char *findStr(char *searchStr) { for (int i = 0; i < 13180807; i++) { char *pTemp = strstr(pp[i], searchStr); //遍历所有的指针数组的地址,字符串查找 if (pTemp != NULL) { printf("\n%s", pp[i]); //打印字符串 } } } void main() { /*char *path = "E:\\dangdangwang.txt"; int num = getFileSize(path); printf("%d字节, %f K, %f M,%f G", num, num / 1024.0, num / 1024.0 / 1024.0, num / 1024.0 / 1024.0 / 1024.0); <span style="white-space:pre"> </span>*/ char *path = "E:\\dangdangwang.txt"; //printf("\n\n有%d行\n", getLine(path)); initDataToMemory(path); //将文件数据载入内存 while (1) //在内存中检索 { char searchStr[100] = { 0 }; scanf("%s", searchStr); findStr(searchStr); } system("pause"); }