diff --git a/C/program-18/program.c b/C/program-18/program.c
index 45e5f37b..1111cbfb 100644
--- a/C/program-18/program.c
+++ b/C/program-18/program.c
@@ -1,29 +1,20 @@
 #include<stdio.h>
-int power(int x,int y)
-{ int i,t=x;
-    for(i=1;i<y;i++) x*=t;
-    return x;
-}
 int main()
 {
-    int t,n,s,i,count=0,r,sum=0;
-    printf("enter the number\n");
+    int c=0,a,temp;  
+    int n;
+    printf("Enter the number");
     scanf("%d",&n);
-    t=s=n;
-    while(s!=0)
-    {
-        s=n/10;
-        count++;
-        
-    }
-    printf("%d\n",count);
-        while(n!=0)
-    {
-        r=n%10;
-        sum+=power(r,count);
-        n/=10;
-    }
-     if(sum==t) printf("Amstrong number = %d\n",sum);
-    
+    temp=n;  
+    while(n>0)  
+    {  
+    a=n%10;  
+    n=n/10;  
+    c=c+(a*a*a);  
+    }  
+    if(temp==c)  
+    printf("armstrong number");   
+    else  
+    println("Not armstrong number");
     return 0;
-}
\ No newline at end of file
+}