char xx[50][80];
int maxline=0;

int readdat(void);
void writedat(void);

void sortcharA(void)
{

}

void main()
{
clrscr();
if(readdat())
{printf("Can't open the file ENG.IN!\n");
return;
}
sortcharA();
writedat();
}

int readdat(void)
{
FILE *fp;
int i=0;
char *p;
if((fp=fopen("in.dat","r"))==NULL)
return 1;
while(fgets(xx,80,fp)!=NULL)
{p=strchr(xx[i],'\n');
if(p)
*p=0;
i++;
}
maxline=i;
fclose(fp);
return 0;
}

void writedat(void)
{FILE *fp;
int i;
fp=fopen("out1.dat","w");
for(i=0;i<maxline;i++)
{printf("%s\n",xx[i]);
fprintf(fp,"%s\n",xx[i]);
}
fclose(fp);
}

/* 注：本题采用冒泡法进行排序。*/
void sortcharA(void)
{
int i,j,k,strl;
char ch;
for(i=0;i<maxline;i++)
{strl=strlen(xx[i]);
for(j=0;j<strl-1;j++)
for(k=j+1;k<strl;k++)
if(xx[i][j]>xx[i][k])
{ch=xx[i][k];
xx[i][k]=xx[i][j];
xx[i][j]=ch;
}
}
}

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