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+/***************************************************************************
+ *
+ * Purpose: generate the factorial of a number by recursion
+ * Author: M. J. Leslie
+ * Date: 09-Apr-94
+ *
+ ***************************************************************************/
+
+#include <stdio.h>
+
+int factorial(int num);
+
+main()
+{
+ int num;
+ puts ("This program will return the factorial of a number.");
+ printf("Please enter the number ==> " );
+ scanf("%d", &num);
+
+ printf(" %d! is %d\n",num, factorial(num) );
+}
+
+int factorial(int num)
+ {
+ int ans=1;
+ if (num == 1 ) return;
+ ans = num * factorial(num-1);
+ return ans;
+}