#include "stdio.h"
int fact(int n)
{
    int i, b[100];
    b[1]=1;
    if(n==1) return b[1];
    else {
        for(i=2;i<=n;i++)
    {
        b[i]=i*b[i-1];
    }
    return b[i-1];
        }

}

void main()
{
    FILE *f_in=NULL;
    FILE *f_out=NULL;

    int i,n,k,key,ans,p;
    float a[100];

    f_in=fopen("in.txt","r");
    f_out=fopen("out.txt","a");

    printf("Choose input. From console-1, from file-2\n");
    scanf("%d",&k);

    if(k==1) {
        printf("Enter n\n");
        scanf("%d",&n);
        printf("Enter elements\n");
        for(i=0;i<n;i++)
            {
                scanf("%f",&a[i]);
            }
    }
    if(k==2){
        if(f_in!=NULL)
        {
            fscanf(f_in,"%d",&n);
            for(i=0;i<n;i++)
            {
                fscanf(f_in,"%f",&a[i]);
            }
            close(f_in);
        }
    }

    printf("Choose output. To console-1, to file-2\n");
    scanf("%d",&key);
    if(key==1)
    {
        for(i=0;i<n;i++)
            {
                printf("%f ",a[i]+fact(i+1));
            }
        printf("\n");
    }

    if(key==2)
    {
        if(f_out!=NULL)
        {
            for(i=0;i<n;i++)
            {
            fprintf(f_out,"%f ",a[i]+fact(i+1));
            close(f_out);
            }
        }
    }

    if(k==1){
        printf("Do you want to repeat entering? Yes-1,No-0");
        printf("\n");
        scanf("%d",&ans);
        if(ans==1) main();
    }
    return 0;
}