C++读写二进制文件

代码#include"stdafx.h"

#include"stdio.h"

#include"string.h"

#include"stdlib.h"

#defineMAXLEN 1024

voidFill0(chart[])

{



if(strlen(t)<2)

{

t[1]=t[0];

t[0]='0';

t[2]=0;

}

}

intbinaryToString(charfrom,charto)

{

FILEfp;

FILEout;



fp=fopen(from,"rb");

out=fopen(to,"w");

if(!fp||!out){

printf("error!n");

return-1;

}

unsignedcharc;

intcount;



charcc[2];

intsize=0;

while((count=fread(&c,1,1, fp))==1)

{





sprintf(cc,"%x",c);

Fill0(cc);





fwrite(cc,1,2,out);



size++;



}

printf("total:%d",size);

fclose(out);

fclose(fp);

return0;

}

intstringToBinary(charfrom,charto)

{

FILEfp;

FILEout;



fp=fopen(from,"r");

out=fopen(to,"wb");

if(!fp||!out){

printf("error!n");

return-1;

}



intcount;



charcc[2];

intsize=0;

intd=0;

while((count=fread(cc,1,2, fp))==2)

{



sscanf(cc,"%2x",&d);





fwrite(&d,1,1,out);



size++;



}

printf("total:%d",size);

fclose(out);

fclose(fp);

return0;

}





intmain(intargc,char*argv[])

{



if(argc!=4)

{

printf("cmd -tos|tob n");

getchar();

return-1;

}

if(strcmp(argv[1],"tos")==0)

{

binaryToString(argv[2],argv[3]);

}

elseif(strcmp(argv[1],"tob")==0)

{

stringToBinary(argv[2],argv[3]);

}

return1;

}

原文链接: https://www.cnblogs.com/yangyh/archive/2010/05/20/1740371.html

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