Write a program to read in two numbers, x and n, and then compute the sum of this geometric progression.

Write a program to read in two numbers, x and n, and then compute the sum of this geometric progression: 1+x+x2+x3+………….+xn.

Program Code:

#include<stdio.h>

#include<math.h>

void main()

{

int x,n,sum=0,i;

L:printf("\n enter the value of x and n: ");

scanf("%d%d",&x,&n);

if(x<0 || n<0)

{

printf("\n enter only positive values for x and n");

goto L;

}

for(i=0;i<=n;i++)

{

sum=sum+pow(x,i);

}

printf("\n x=%d,n=%d,sum of G.P=%d",x,n,sum);

getch();

}