number_pyramid.c

C/number_pyramid.c

@@ -0,0 +1,52 @@
+/*
+    This is number pyramid program. Here the input data is the number of rows as shown below in the following examples.
+    Enter number of rows: 4
+      1 
+    2 3 2 
+  3 4 5 4 3 
+4 5 6 7 6 5 4 
+    Enter number of rows: 8
+              1 
+            2 3 2 
+          3 4 5 4 3 
+        4 5 6 7 6 5 4 
+      5 6 7 8 9 8 7 6 5 
+    6 7 8 9 10 11 10 9 8 7 6 
+  7 8 9 10 11 12 13 12 11 10 9 8 7 
+8 9 10 11 12 13 14 15 14 13 12 11 10 9 8 
+*/
+#include <stdio.h>
+int main()
+{
+    int i, s, r, k=0, c = 0, count = 0;
+
+    printf("Enter number of rows: ");
+    scanf("%d",&r);
+
+    for(i=1; i<=r; ++i)
+    {
+        for(s=1; s <= r-i; ++s)
+        {
+            printf("  ");
+            ++c;
+        }
+
+        while(k != 2*i-1)
+        {
+            if (c<= r-1)
+            {
+                printf("%d ", i+k);
+                ++c;
+            }
+            else
+            {
+                ++count;
+                printf("%d ", (i+k-2*count));
+            }
+            ++k;
+        }
+        count = c = k = 0;
+
+        printf("\n");
+    }
+}