mirror of https://github.com/TheAlgorithms/C
45 lines
954 B
C
45 lines
954 B
C
#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main()
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{
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float x[20], y[20], a, sum, p;
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int n, i, j;
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printf("Enter the no of entry to insert->");
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scanf("%d", &n);
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for (i = 0; i < n; i++)
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{
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printf("enter the value of x%d->", i);
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scanf("%f", &x[i]);
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printf("enter the value of y%d->", i);
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scanf("%f", &y[i]);
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}
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printf("\n X \t\t Y \n");
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printf("----------------------------\n");
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for (i = 0; i < n; i++)
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{
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printf("%f\t", x[i]);
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printf("%f\n", y[i]);
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}
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printf("\nenter the value of x for interpolation:");
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scanf("%f", &a);
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sum = 0;
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for (i = 0; i < n; i++)
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{
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p = 1.0;
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for (j = 0; j < n; j++)
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{
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if (i != j)
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{
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p = p * (a - x[j]) / (x[i] - x[j]);
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}
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sum = sum + y[i] * p;
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}
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printf("ans is->%f", sum);
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return 0;
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}
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} |