Untitled

#include<stdio.h>
#include<math.h>
int main(){
	int i,n;
	int a[100];
	do{
		printf("Nhap so phan tu n = ");
		scanf("%d", &n);
	}while(n<0 || n>100);
	for(i=0; i<n; i++){
		printf("\nNhap a[%d]:",i);
		scanf("%d", &a[i]);	
	}
	// a,SO CHINH PHUONG
	int dem1=0;
	for (i=0; i<n; i++){
		if(sqrt(a[i]) == (int)sqrt(a[i]))
		dem1++;
	}
	printf("\nCo %d so chinh phuong ", dem1);
	printf("\nSo chinh phuong la:");
	for(i=0;i<=n;i++){
	int t=(int)sqrt(a[i]);
		if( pow(t,2)==a[i]){
			printf("%d ", a[i]);
        }	
	}
	//b,SO HOAN HAO
	int tong;
	for (i=0; i<n; i++){
		if(n % i == 0)
		tong = tong + i;
	}		
	if (tong == n){
		printf("So hoan hao: %d ", n);
	}
	
	return 0;
}