file_test.c

这个是Linux下的应用程序

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main(void)
{
	FILE *fp;
	FILE *fp1;
	char temp[200];
	int line_count;
	int i;
	system("ls > temp.txt");
	//usleep(500);
	system("cat temp.txt |wc -l >line.txt");
	//usleep(500);
	fp1=fopen("line.txt","r");
	fp=fopen("temp.txt","r");
	
	fscanf(fp1,"%d",&line_count);
	printf("%d\n",line_count);
	for( i=0; i<line_count;i++)
	{
		sprintf(temp,"%d",i);
		printf("%s ",temp);	
		fscanf(fp,"%s",temp);
		printf("%s\n",temp);
	}
	fclose(fp);
	fclose(fp1);
	return;
}