lab9.c

来自「ALL LINUX LAB PROGRAM MIT MANIPAL 2008-0」· C语言 代码 · 共 54 行

#include<stdio.h>
#include<fcntl.h>
main()
{
	int fd,count=-1,f=0,pos;
	char c;
	char fname[20];
	printf("Enter file name :");
	scanf("%s",fname);



		






		



			fd=open(fname,0);
			if(fd<0)
				printf("Cannot Open file not exists");
			else
			{	printf("Enter postion :");
				scanf("%d",&pos);
				printf(" Original data:");
				while((read(fd,&c,1))!=0)
					putchar(c);
close(fd);
fd=open(fname,0);
				while((read(fd,&c,1))!=0)
				{
					count++;
					if(count>=pos)
					{
						f=1;
						printf("%c",c);
					}
				}
				if(f!=1)
					printf("Invalid position");
				close(fd);
			}
			
	
}