diff --git a/C/program-45/program.c b/C/program-45/program.c
new file mode 100644
index 00000000..a19e4af8
--- /dev/null
+++ b/C/program-45/program.c
@@ -0,0 +1,37 @@
+
+// C program to illustrate the above given pattern of numbers. 
+#include<stdio.h> 
+   
+int main() 
+{ 
+      int n = 5, i, j, num = 1, gap; 
+   
+      gap = n - 1; 
+   
+      for ( j = 1 ; j <= n ; j++ ) 
+      { 
+          num = j; 
+   
+          for ( i = 1 ; i <= gap ; i++ ) 
+              printf(" "); 
+   
+          gap --; 
+   
+          for ( i = 1 ; i <= j ; i++ ) 
+          { 
+              printf("%d", num); 
+              num++; 
+          } 
+          num--; 
+          num--; 
+          for ( i = 1 ; i < j ; i++) 
+          { 
+              printf("%d", num); 
+              num--; 
+          } 
+          printf("\n"); 
+   
+      } 
+   
+      return 0; 
+}