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把一个内容为16进制 的文本文件,转换成10进制的文本文件

2015-08-12 13:53 232 查看
把一个内容为16进制 的文本文件,转换成10进制的文本文件

#include "stdafx.h"
#include <stdio.h>
#include <math.h>
#include <iostream>
#include <fstream>
using namespace std;
int PowerXY(int x, int y)
{
if(y == 0)
return 1 ;
else
return x * PowerXY(x, y -1 ) ;
}

int Convert16To10(int number)
{
int r = 0 ;
int i = 0 ;
int result = 0 ;

while(number)
{
r = number % 16 ;
result += r * PowerXY(16, i++) ;
number /= 16 ;
}

return result ;
}
int main()
{
int sum=0;
FILE *fp,*wp;
int i=0;
int x;
if((fp=fopen("cascade.txt","r"))==NULL)
{
printf("cannot open file");
return -1;
}
if((wp=fopen("text.txt","w"))==NULL)
{
printf("cannot open file");
return -1;
}
printf("Results:\n");
int resutlt=0;
while(!feof(fp))
{
sum++;
fscanf(fp,"%x",&x);
resutlt = Convert16To10(x);

fprintf(wp,"%d ,",resutlt);
if (sum%16==0)
{
fwrite("\n",1,1,wp);//换行
}
}

fclose(fp);
fclose(wp);
return 0;
}

假如cascade.txt 文件内容类似下面这样的:

13 00 00 00 07 00 00 00 14 E4 EB 5B 7B D9 55 3F

61 CA 3C C9 88 D1 54 3F 9A C4 D2 20 02 97 42 3F

8A 5A 62 B1 C2 37 41 3F B2 01 22 0E 23 CE 44 3F

38 8C 96 C4 D8 90 2F 3F 3B C6 87 6C 2F 88 39 3F

93 90 C9 5B 0E F1 38 3F FF 09 2E 56 D4 E0 14 C0

01 00 00 00 00 00 00 00 00 00 00 00 02 00 00 00

04 00 00 00 FF FF FF FF 01 00 00 00 FF FF FF FF

0D 00 00 00 FF FF FF FF 33 FE 7D C6 85 83 FD 3F

00 00 00 00 00 00 00 00 15 00 00 00 16 00 00 00

17 00 00 00 FF FF FF FF 02 00 00 00 FF FF FF FF

0C 00 00 00 FF FF FF FF A7 96 AD F5 45 E2 1A 40


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