#include <stdio.h>
#include <math.h>
#include <stdlib.h>
float Y(float x);
 
int main(){
float sum=0;
int n=21;
//printf("Vvedite kolichestvo elimentov v massive\n");
//scanf("%d",&n);
 
//int *x=new int[n];
//float *y=new float [n];
int x[50];
float y[50];
int i;
for(i=0;i<n;i++)
    {
        x[i]=rand()%21 -10;
        printf("%d ",x[i]);
    }
 
for(i=0;i<n;i++)
    y[i]=Y(x[i]);
 
for(i=0;i<15;i++)
{
     if (y[i]<0) sum+=y[i];
}
printf("\n");
 for(i=0;i<n;i++)
     printf("%6.2f ", int(y[i]*100+0.5)/100.0);
 printf("\nsum=%f\n",sum);
// getch();
}
float Y(float x)
{
     float f=0;
     f= x/log(abs(x+1.23));
     return f;
}

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