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#include<stdio.h> #include<stdlib.h> int max = 5000; void display(int arr[]){ int ctr = 0; int i=0; for (i=0; i<max; i++){ if (!ctr && arr[i]) ctr = 1; if(ctr) printf("%d", arr[i]); } } void factorial(int arr[], int n){ if (!n) return; int carry = 0; int i=max-1; for (i=max-1; i>=0; --i){ arr[i] = (arr[i] * n) + carry; carry = arr[i]/10; arr[i] %= 10; } factorial(arr,n-1); } int main(){ int *arr = calloc(max, sizeof(int)); arr[max-1] = 1; int num; printf("Enter the number: "); num = 5; printf("factorial of %d is: ",num); factorial(arr,num); display(arr); free(arr); return 0; }
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