#include<stdio.h>
#include<math.h>

#include<string.h>

int del(char s[],int i, int n)
{
	
	if (i + n < strlen(s))
	{
		for (int k = i - 1; k < i+n; k++)
		{
			s[k] = s[k + n];
			s[k+1] = NULL;
		}		
	}
	else
	{
		s[strlen(s) - n] = NULL;
	}
	return 0;
}
void main ()
{
	char s[100];
	int i, n;
	printf("Nhap chuoi\n");
	gets(s,100);
	printf("Nhap vi tri\n");
	scanf("%d", &i);
	printf("Nhap so ky tu can xoa\n");
	scanf("%d", &n);
	del(s, i, n);	
	printf("Chuoi la %s", s);
	
}