diff --git a/arrayreversal.c b/arrayreversal.c
new file mode 100644
index 0000000..218b35d
--- /dev/null
+++ b/arrayreversal.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main()
+{
+    int num,x, *a, i,*b;
+    scanf("%d", &num);
+    a = (int*) malloc(num * sizeof(int));
+    b = (int*) malloc(num * sizeof(int));
+    for(i = 0; i < num; i++) {
+        scanf("%d\t", &x);
+        a[i]=x;
+    }
+    for (i=0;i<num;i++)
+    {b[num-1-i]=a[i];}
+
+
+    for(i = 0; i < num; i++)
+        printf("%d ", b[i]);
+    return 0;
+}
+
diff --git a/diamond.c b/diamond.c
new file mode 100644
index 0000000..1c65940
--- /dev/null
+++ b/diamond.c
@@ -0,0 +1,23 @@
+#include<stdio.h>
+int main()
+{
+    int i,j,k,m,n;
+    pritnf("entre the number");
+    scanf("%d",&n);
+    for (i=1;i<=n;i++)
+    {
+        for (j=n-i;j>0;j--)
+            printf("  ");
+        for (k=1;k<=i;k++)
+            printf(" *");
+    }
+    m=n-1;
+     for (i=1;i<=m;i++)
+    {
+        for (j=1;j>i;j++)
+            printf("  ");
+        for (k=n-1;j>0;j--)
+            printf(" *");
+    }
+    return 0;
+}
diff --git a/palindrome.c b/palindrome.c
new file mode 100644
index 0000000..7183b61
--- /dev/null
+++ b/palindrome.c
@@ -0,0 +1,20 @@
+#include<stdio.h>
+int main()
+{
+    int n,on,r,sum=0;
+    scanf("%d",&n);
+    on=n;
+    while(n>0)
+      {
+
+        r=n%10;
+        sum=sum*10+r;
+        n=n/10;
+      }
+
+      if (on==sum)
+        printf("it is palindrome");
+      else
+        printf("it is not palindrome");
+return 0;
+}
diff --git a/saurabh.c b/saurabh.c
new file mode 100644
index 0000000..a6e5933
--- /dev/null
+++ b/saurabh.c
@@ -0,0 +1,10 @@
+#include<stdio.h>
+int main()
+{
+int a,b;
+int sum;
+scanf("%d%d",&a,&b);
+sum=a+b;
+printf("%d",sum);
+return 0;
+}
\ No newline at end of file