Write a C program that a string as an argument and return all the files that begins with that name in the current directory. For example > ./a.out foo will return all file names that begins with foo.

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<dirent.h>

int main(int argc,char* argv[]){
DIR *d;
char *position;
struct dirent *dir;
int i=0;

if(argc!=2){
	printf("insufficient arguments.");
}
else{
	d=opendir(".");
	if(d){
		while((dir=readdir(d))!=NULL)
		{
			position = strstr(dir->d_name,argv[1]);
			i=position-dir->d_name;
			if(i==0)
				printf("%s\n",dir->d_name);
		}
		closedir(d);
		}
		return 0;
	}

}