摘要
C实现将txt数据读入内存/CPU缓存的函数,不多说,实现如下。
1. 实现代码
代码如下 | 复制代码 |
#include "stdafx.h"
#include
#include
intfilelength(FILE*fp);
char*readfile(char*path);
intmain(void){
char*string;
string=readfile("C:/Users/Joe WANG/Desktop/Data.txt");
printf("数据读入内存完毕! \n");
printf("内存中的数据如下:\n%s \n",string);
system("pause");
return0;
}
char*readfile(char*path){
FILE*fp;
intlength;
char*ch;
if((fp=fopen(path,"r"))==NULL){
printf("open file %s error.\n",path);
exit(0);
}
length=filelength(fp);
ch=(char*)malloc(length);
fread(ch,length,1,fp);
*(ch+length)='\0';
returnch;
}
intfilelength(FILE*fp){
intnum;
fseek(fp,0,SEEK_END);
num=ftell(fp);
fseek(fp,0,SEEK_SET);
returnnum;
}
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2. Data.txt中的源数据
3. 测试结果