tj.cpp

加密置换加密方法．能实现加解密的Ｃ程序．

#include<stdio.h>
#include<stdlib.h>
//#define exit
main()
{FILE *fp;
int i=0;
int row=0;
char name[ 100];
printf("Input a filename:\n");
scanf("%s",name);
if((fp=fopen(name,"r"))==NULL)
{

	fprintf(stderr,"Error opening the file:%s\n",name);
	exit(1);
}
while(!feof(fp)){
fgetc(fp);
i++;
if(i=='\n')
row++;
}
printf("The number of characters of file%s=%d\n",name,i);
printf("The row of file%s=%d\n",name,row);

fclose(fp);
return(0);
}