Create factorial_trailing_zeroes.c

misc/factorial_trailing_zeroes.c

@@ -0,0 +1,25 @@
+/*
+programme for computing number of zeroes at the end of factorial of a given number n
+*/
+#include<stdio.h>
+#include<math.h>        //including math.h header file to use pow function
+int main()
+{
+    int i,n,test=0,count=0;
+    //taking input number n
+    scanf("%d",&n);
+    
+    //looping from 1 till loop break
+    for(i=1;;i++)
+    {
+        test=n/pow(5,i);//division of n by ith power of 5(storing in integer form)
+        if(test!=0)     //condition for zeroes at end corresponding individual ith case
+        {
+            count=count+test;  
+        }
+        else 
+            break;      //break the loop for if test=0
+    }
+    printf("%d\n",count);         
+    return 0;
+}