上面提到的原代码（C语言）—1

}

image->width=max-min+10;

}

void ScaleMyImage(pmyimg image,int neww){

int newh;

int i,j;

int sx,sy,ex,ey;

unsigned char *newd,*p;

unsigned char *l1,*l2;

int sum,c,s,t;

newh=image->height*neww/image->width;

newd=(unsigned char *)malloc(newh*neww);

if(!newd)

Error("memory allocation error in ScaleImage\n");

p=newd;

sy=0;

for(i=0;i<newh;i++){

ey=(i+1)*image->height/newh;

sx=0;

l1=image->data+sy*image->width;

for(j=0;j<neww;j++){

ex=(j+1)*image->width/neww;

sum=0;

c=0;

l2=l1;

for(s=sy;s<ey;s++){

for(t=sx;t<ex;t++){

sum+=l2[t];

c++;

}

l2+=image->width;

}

*p=sum/c;

p++;

sx=ex;