#include<stdlib.h>
#include<stdio.h>
#include<math.h>
#include<conio.h>
void main()
{
float g,f;
int n;
printf("f= ");
scanf("%f",&f);
if (f>=1)       {g=cos((f*f)+f-1); n=1;}
else if (f<=-1) {g=f*pow(log(fabs(f)),2); n=3;}
else            {g=sin(f/(exp(f)+1)); n=2;}
printf("f= %6.3f  g=%8.5f.\n  № %d",f,g,n);
scanf("%f",&f);
}