#include "stdio.h"
#include "stdlib.h"
#include "time.h"
float func(float **a,int k,int m)
{
    int j,s=0;
    float b=1;
    for(j=0;j<m;j++)
        {
            if(a[k][j]>=-1.5&&a[k][j]<=-1||a[k][j]>=1&&a[k][j]<=1.5)
                {
                    b=b*a[k][j]*a[k][j];
                    s=s+1;
                }
        }
    if(s==0) b=0;
    return b;
}

void main()
{
    srand(time(0));
    FILE *f_in=NULL;
    FILE *f_out=NULL;

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

    int m,n,i,k,j,key,ans;
    float res;

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

    if(i==1)
    {
    printf("Enter amount of lines and columns\nLines:");
    scanf("%d",&n);
    printf("Columns:");
    scanf("%d",&m);
    printf("\n");
    }

    if(i==2)
    {
        if(f_in!=NULL)
        {
            fscanf(f_in,"%d %d",&n,&m);
        }
    }

    float** a=(float**) malloc(n*sizeof(float*));
    for(k=0;k<n;k++)
            {
                a[k]=(float*)malloc(m*sizeof(float));
            }
    if(a==NULL) exit(2);

    if(i==1)
    {
        for(k=0;k<n;k++)
        {
            for(j=0;j<m;j++)
            {
                a[k][j]=(0.1)*(-15+rand()%31);
                printf("%f ",a[k][j]);
            }
            printf("\n");
        }
    printf("\n");
    }

    if(i==2)
    {
            for(k=0;k<n;k++)
            {
                for(j=0;j<m;j++)
                {
                    fscanf(f_in,"%f",&a[k][j]);
                }
            }
            close(f_in);
    }

    printf("Choose output. To console-1, to file-2\n");
    scanf("%d",&key);
    printf("\n");
    if(key==1)
    {
        for(k=0;k<n;k++)
            {
                res=func(a,k,m);
                printf("b[%d] = %f\n",k+1,res);
            }
    }
    if(key==2)
    {
        if(f_out!=NULL)
        {
            for(k=0;k<n;k++)
                {
                    res=func(a,k,m);
                    fprintf(f_out,"b[%d] = %f\n",k+1,res);
                }

            close(f_out);
        }
    }

    for(k=0;k<n;k++)
        {
            free(a[k]);
        }
    free(a);

    if(i==1){
        printf("\nDo you want to continue work? Yes-1,No-0\n");
        scanf("%d",&ans);
        if(ans==1) main();
    }
    return 0;
}