Weddle ' s Rule in C

 #include<stdio.h>
    float f(float x)
    {
        return (1/(1+x));
    }
    main()
    {
        int i,n;
        float a,b,h,s=0,x,y[100],s1=0,s2=0,s3=0,s4=0,t;
        printf("\n\t\t----~~~~ Crazy Coder---- TechApurba----~~~~");
        printf("\n\n\t : weddle rule : \n");
        printf("\nEnter the lower limit : ");
        scanf("%f",&a);
        printf("\nEnter the upper limit : ");
        scanf("%f",&b);
        printf("\nEnter the number of sub-intervals : ");
        scanf("%d",&n);
        h=(b-a)/n;
        x=a;
        for(i=0;i<=n;i++)
        {
            y[i]=f(x);
            x=x+h;
        }
        for(i=0;i<=n-6;i+=6)
        {
            s1=s1+y[i+2]+y[i+4];
            s2=s2+y[i+1]+y[i+5];
            s3=s3+y[i+3];
        }
        for(i=0;i<=n-12;i+=6)
            s4=s4+y[i+6];
        s=(3*h/10)*(y[0]+y[n]+s1+5*s2+6*s3+2*s4);
        printf("\nThe result of the equation (1/(1+x)) is:  %f\n\n",s);
    }





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