diff --git a/C/guessing_the_number.c b/C/guessing_the_number.c
new file mode 100644
index 0000000..ace096c
--- /dev/null
+++ b/C/guessing_the_number.c
@@ -0,0 +1,31 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<time.h>
+int main()
+{
+    int guess,nguess=1,num;
+    srand(time(0));
+    num=rand()%100+1;
+    
+    do
+    {
+        printf("Guess the right number between 1 to 100 : \n");
+         scanf("%d",&guess);
+    if(guess>num)
+    {
+        printf("LOWER NUMBER PLEASE : \n");
+    }
+    else if(num>guess)
+    {
+        printf("GREATER NUMBER PLEASE : \n");
+    }
+    else
+    {
+        printf("*CONGRATULATION !!! YOU GUESS THE RIGHT NUMBER. \n");
+        printf("*YOU GUESS THE RIGHT NUMBER IN %d ATTEMPTS \n",nguess);
+    }
+    nguess++;
+    }
+    while(guess!=num);
+
+}
diff --git a/C/square.c b/C/square.c
new file mode 100644
index 0000000..551ddad
--- /dev/null
+++ b/C/square.c
@@ -0,0 +1,48 @@
+#include<stdio.h>
+int main()
+{
+    int i,j,k,l,m,n,o=2,a,b,c,d,g,h;
+    printf("enter the last digit of square");
+    scanf("%d",&n);
+    b=n-1;
+    for(i=n;i>=1;i--)
+    {
+        m=n;
+         for(l=1;l<=n-i;l++)
+        {
+            printf("%d ",m);
+            m--;   
+        }
+        for(j=1;j<=2*i-1;j++)
+        {
+            printf("%d ",i);
+        }
+        o=i+1;
+        for(k=1;k<=n-i;k++)
+        {
+            printf("%d ",o);
+            o++;
+        }
+        printf("\n");
+    }
+    for(a=1;a<=b;a++)
+    {
+        d=n;
+        for(c=1;c<=b-a;c++)
+        {
+            printf("%d ",d);
+            d--;
+        }   
+        for(g=1;g<=2*a+1;g++)
+        {
+            printf("%d ",a+1);
+        }    
+        for(h=1;h<=b-a;h++)
+        {
+            printf("%d ",a+h+1);
+        }
+        
+        printf("\n");
+    }
+return 0;
+}