reallocExample.c

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

void main() {
	int* vet = NULL;
	int i = 0;
	int soma = 0;
	
	vet = (int*) malloc (1 * sizeof(int));
	
	do {
		printf("idade[%d] = ", i);
		scanf(" %d", &vet[i]);
		soma += vet[i];
		vet = (int*) realloc (vet, (i + 1) * sizeof(int));
		i++;
	} while (vet[i-1] > -1);
	
	printf("soma = %d\n", soma);
}