h

#include <stdio.h>
#include <stdlib.h>
#define TAMANHO 100

void PA(float a1, float r, int n, float* An, float* Sn);

int main()
{
    int i, n;
    float a1, r, An, Sn;
    do{
        printf("a1 = ");
        scanf("%f", &a1);
        printf("r = ");
        scanf("%f", &r);
        printf("n = ");
        scanf("%i", &n);
        if(r == 0 || n <= 0)
            printf("\nERRO\n");
        else{
            PA(a1, r, n, &An, &Sn);
            printf("An = %f\n", An);
            printf("Sn = %f\n", Sn);
            i++;
        }
    }while(i < TAMANHO);

    return 0;
}