diff --git a/C/README.md b/C/README.md
index 4b192d35..5076d0b7 100644
--- a/C/README.md
+++ b/C/README.md
@@ -43,4 +43,9 @@
 | Program-39 | Program to find the GCD of a number using recursion |
 | Program-40 | Program to find the ackerman of given two numbers|
 | Program-41 | Program to find sum of two numbers without using any operator |
+| Program-42 | Program to print Floyd’s triangle Without using a temporary variable and with only one loop |
+| Program-43 | Program for printing the hollow triangle pattern |
+| Program-44 | Program for implementation of the approach |
+| Program-45 | Program to illustrate the above given pattern of numbers. |
+
 
diff --git a/C/program42/program42.c b/C/program-42/program42.c
similarity index 100%
rename from C/program42/program42.c
rename to C/program-42/program42.c