Below is the code to print the factorial of alternate elements in an array
#include <stdio.h>
int fact(int n,int i){
if(i!=0){
n*=i;
fact(n,i-1);
}
else{
return n;
}
}
int main() {
int n,i,j,x=1;
printf("Enter how many numbers do you want to enter:");
scanf("%d",&n);
int arr[n];
printf("Enter elements: ");
for(i=0;i<n;i++){
scanf("%d",&arr[i]);
}
printf("Elements in the array are:\n");
for(i=0;i<n;i++){
printf("%d\n",arr[i]);
}
printf("Factorial of alternate numbers are:");
for(i=0;i<=n;i++){
if(i%2==0){
j=arr[i];
x=fact(1,j);
printf("%d\n",x);
}
}
}Output:
Enter how many numbers do you want to enter:7
Enter elements: 5
3
5
4
2
7
8
Elements in the array are:
5
3
5
4
2
7
8
Factorial of alternate numbers are:120
120
2
40320
