#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "count2l7.h"




void print_array(double* a,int n)
{
    int j;
    int NMAX=5;
    for (j=0;j<n;j++)
    {
        if (j%NMAX==0) printf("\n");
        printf("%lf ",a[j]);
    }
}


void init_array(double* a,int n,int key)
{
    int k;
    srand(key);
    for (k=0;k<n;k++) a[k]=rand();
}

int read_array(const char* name,double* a,int n)
{
    FILE *fp;
    int i;
    if (!(fp=fopen(name,"r")))
    {
        return -1;
    }
    for (i=0;i<n;i++)
    {
        if (fscanf(fp,"%lf",a+i)!=1)
        {
            if (!feof(fp))
            {
                fclose(fp); return -2;
            }
            fclose(fp); return i;
        }
    }
    fclose(fp); return i;
}
void combination(double* a, double* b, double* c, int n,int m)
{
int i,j,k,f;
f==n+m;
for(i=0, j=0,k=0; i<n - 1 && j<m - 1&&k<f - 1; i++, j++,k++)
{if (a[i]<b[j]) {c[k]=a[i];
i++;
}
else {c[k]=b[j];
j++;
}
}
}

int main(void)
{
    int s,n,key,f,m;
    f==n+m;
    double x;
    double *a;
    double *b;
    double *c;
    double t;
    int res;
    int res2=0;
    const char* name="posledovat.txt";
    const char* name2="posledovat2.txt";

    printf("Input n and key:");
    if (scanf("%d%d",&n,&key)!=2)
    {
        printf("cannot read:\n");
        return 1;
    }
    if (!(a=(double*)malloc(n*sizeof(double))))
    {
        printf("not enough memory\n");
        return 2;
    }
    if (key==0)
    {
        res=read_array(name,a,n);
        if (res<0)
        {
            switch(res)
            {
            case (-1):
                {
                    printf("cannot open %s\n", name);
                    break;
                }
            case (-2):
                {
                    printf("cannot read %s\n", name);
                    break;
                }
            default:
                {
                    printf("unknown error %d:%s\n", res, name);
                    break;
                }
            free(a);
            return 3;
            }
        }
        n=res;

    }
printf("Input m and key:");
    if (scanf("%d%d",&m,&key)!=2)
    {
        printf("cannot read:\n");
        return 1;
    }
    if (!(a=(double*)malloc(n*sizeof(double))))
    {
        printf("not enough memory\n");
        return 2;
    }
    if (key==0)
    {
        res=read_array(name,b,m);
        if (res<0)
        {
            switch(res)
            {
            case (-1):
                {
                    printf("cannot open %s\n", name);
                    break;
                }
            case (-2):
                {
                    printf("cannot read %s\n", name);
                    break;
                }
            default:
                {
                    printf("unknown error %d:%s\n", res, name);
                    break;
                }
            free(b);
            return 3;
            }
        }
        m=res;

    }

    else
    init_array(a,n,key);
    init_array(b,m,key);
    print_array(a,n); printf("\n");
    combination(a,b,c,n,m);
    t=clock();
    t=(clock()-t)/CLOCKS_PER_SEC;
    printf("\nelapsed=%.21f\n",t);
    free(a);
    return 0;

}