C语言实现bmp图像平移操作

// left_right_translation.cpp : 定义控制台应用程序的入口点。
//
 
#include "stdafx.h"
#include<windows.h>
#include<stdio.h>
#include<math.h>
 
int _tmain(int argc, _TCHAR* argv[])
{
 int width;
 int height;
 RGBQUAD *pTableColor;
 unsigned char *pBmpBuf1,*pBmpBuf2;
 
 BITMAPFILEHEADER bfhead;
 BITMAPINFOHEADER bihead;
 
 //读出源图像的信息
 FILE *fpr=fopen("E:\\picture\\dog.bmp","rb");
 if(fpr==0)
  return 0;
 fread(&bfhead,14,1,fpr);
 fread(&bihead,40,1,fpr);
 width=bihead.biWidth;
 height=bihead.biHeight;
 int LineByte=(width*8/8+3)/4*4;
 pTableColor=new RGBQUAD[256];
 fread(pTableColor,sizeof(RGBQUAD),256,fpr);
 pBmpBuf1=new unsigned char[LineByte*height];
 fread(pBmpBuf1,LineByte*height,1,fpr);
 fclose(fpr);
 //将处理后的图像赋值为白色
 pBmpBuf2=new unsigned char[LineByte*height];
 for(int i=0;i<height;i++)
  for(int j=0;j<width;j++)
  {
   unsigned char *p;
   p=(unsigned char*)(pBmpBuf2+LineByte*i+j);
   (*p)=255;
  }
 
  //左右平移功能的实现
 int t;
 printf("请输入左平移或右平移的大小t(左移t<0,右移t>0):");
 scanf("%d",&t);
 int k=abs(t);
 printf("%d",k);
 if(t<0)
 {
  if(t>=(-width))
  {
   for(int i=0;i<height;i++)
    for(int j=0;j<(width-k);j++)
   {
    unsigned char *p1,*p2;
    p1=pBmpBuf1+LineByte*i+j+k;
    p2=pBmpBuf2+LineByte*i+j;
    (*p2)=(*p1);
   }
  }
 }
 else 
 {
  if(t<=width)
  {
 
   for(int i=0;i<height;i++)
    for(int j=k;j<width;j++)
    {
     unsigned char *p1,*p2;
     p1=pBmpBuf1+LineByte*i+j-k;
     p2=pBmpBuf2+LineByte*i+j;
     (*p2)=(*p1);
    }
 
  }
 
 }
 //保存处理后的图像
 FILE *fpw=fopen("dog.bmp","wb");
 fwrite(&bfhead,14,1,fpw);
 fwrite(&bihead,40,1,fpw);
 fwrite(pTableColor,sizeof(RGBQUAD),256,fpw);
 fwrite(pBmpBuf2,LineByte*height,1,fpw);
 fclose(fpw);
 
 
 
 return 0;
}