Let us c Q.Write a C function to evaluate the series sin(x)=x-(x^3 / 3! ) + (x^5 / 5! ) - (x^7 / 7! ) + ................... to five significant digits.

CH-5J(f).c

#include <stdio.h>
#include <math.h>

long fact(int);
int main()
{
    int x, i = 1;
    float fn = 1, sum = 0;
    printf("Enter value of x=");
    scanf("%d", &x);
    for (int k = 0; fn >= 0.000000000001; k++)
    {
        fn = pow(x, i) / (float)fact(i);
        if (k % 2 == 0)
        {
            sum = sum + fn;
        }
        else
            sum = sum - fn;

        i = i + 2;
    }
    printf("\nsin(%d)=%0.9f", x, sum);
}

long fact(int x)
{
    if (x == 1)
    {
        return 1;
    }
    else
        return x * fact(x - 1);
}