Adding prime no checking program

Author: dev-kant-kumar

numbers3.c

@@ -0,0 +1,40 @@
+// Write a program to check whether entered number is a prime or not
+#include<stdio.h>
+void is_prime(int n);
+int main()
+ {
+    int num;
+    printf("Enter a number :");
+    scanf("%d",&num);
+    is_prime(num);
+    return 0;
+ }
+void is_prime(int n)
+ {
+    int i,count=0;
+    if(n>=2)
+    {
+        for(int i=2;i<=n/2;i++)
+         {
+            if(n%i==0)
+             {
+                count++;
+                break;
+             }
+         }
+        if(count==1)
+         {
+            printf("Entered number is not a prime number \n");
+         } 
+        else
+         {
+            printf("Entered number is a prime number \n");
+         } 
+        
+    }
+    else
+    {
+        printf("Entered number is not a prime number \n");
+    }
+
+ }