#include<stdio.h>
#include<conio.h>
void main()
{
float ax[100],ay[100],x,y=0,temp;
int n,i,j;
printf("Enter n: ");
scanf("%d",&n);
printf("Enter given data...");
for(i=0;i<=n;i++)
{
printf("\nEnter x[%d] and y[%d]: ",i,i);
scanf("%f%f",&ax[i],&ay[i]);
}
printf("Enter x: ");
scanf("%f",&x);
for(i=0;i<=n;i++)
{
temp=1;
for(j=0;j<=n;j++)
{
if(j!=i)
{
temp*=(x-ax[j])/(ax[i]-ax[j]);
}
}
y+=temp*ay[i];
}
printf("Hence, f(%f) = %f",x,y);
getch();
}
OUTPUT:
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