#include<stdio.h>

void main()
 {
    int sum,n;
    fact x,y;
 
  printf("Enter the exponential(E) value");
  scanf("%f ",y);

  printf("Enter the value for x");
  scanf("%f",x);

  printf("No. of times x is to be multiplied");
  scanf("%d",n);

  while(e=n)
   {
     sum=x^n;   
     printf("The result of expression is =%d",sum);
     printf("Check this out%d");
   }
}

#include<stdio.h>
void main()
{
	int i=1,e,x,s,p=1;
	printf("Enter e and x :");
	scanf("%d%d",&e,&x);
	while(i<=x)
	{
	    p=p*e;
            i++;
	}
       
	printf("power is %d ",p);
}

here pow(e,x) is calculated using this program.

#include<stdio.h>
#include<math.h>
main()
{
int i,j,n,x,fact=1;
float c,t,sum=1;
printf("enter the value of x and n);
scanf("%d%d",&x,&n);
while(i<n-1)
{
c=pow(x,i);
for(j=1;j<i;j++)
fact=fact*j;
t=c/fact;
sum=sum+t;
}i=i+1;
printf("the sum of series is %f",sum);
getch();
}