Write a program to evaluate the series

#include<stdio.h>
#include<conio.h>
#include<math.h>
main()
{
    clrscr();
    float n,x,a,b,p,f,sum=1;
    printf("Please Enter the value of x:= ");
    scanf("%f",&x);
    printf("Please Enter the value of n:= ");
    scanf("%f",&n);


    for(a=1;a<=n;a++)

    {
        p=pow(x,a);
        f=1;
        for(b=1;b<=a;b++)
             f=f*b;
        sum=sum+(p/f);

    }
    printf("Result= %.2f",sum);
    getch();
}
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