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

struct elem
{
	char nume[20];
	int varsta;
}A[20];

int varsta(struct elem A[20],int i)
{
	if(A[i].varsta>18) return 1;
	return 0;
}

void functie()
{
	FILE *f;
	f=fopen("struct.bin","rb");
	struct elem *B;
	int i,n;
	fread(&n,1,1,f);printf("\n%d\n",n);
	B=(struct elem *)malloc(n*sizeof(struct elem));
	for(i=1;i<=n;i++)
		fread(&B[i],sizeof(struct elem),1,f);
	for(i=1;i<=n;i++)
		if(varsta(B,i)==1) printf("%s- cu varsta %d",B[i].nume,B[i].varsta);
	fclose(f);
}

int main()
{
	struct elem A[20];
	FILE *f;
	f=fopen("struct.bin","wb");
	int n,nr,i;
	printf("Numarul de persoane: ");scanf("%d",&n);
	fwrite(&n,1,1,f);
	for(i=1;i<=n;i++)
	{
		printf("Nume: ");scanf("%s",A[i].nume);
		printf("Varsta: ");scanf("%d",&A[i].varsta);
		fwrite(&A[i],sizeof(struct elem),1,f);
	}
	fclose(f);
	functie();
	return 0;
}