diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 5b186b0..e58fbcd 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -15,4 +15,5 @@ Many thanks to (in alphabetic order):
      nasciiboy
      Rafael Bluhm
      Stevan Cruel
-     Stonecome
\ No newline at end of file
+     Stonecome
+     Dilip Puri
diff --git a/src/04_25.c b/src/04_25.c
new file mode 100644
index 0000000..f589adf
--- /dev/null
+++ b/src/04_25.c
@@ -0,0 +1,13 @@
+/*Solution provided by dilippuri*/
+#include<stdio.h>
+
+int main(void){
+  int i;
+  printf("Decimal\tOctal\tHexadecimal\n");
+
+  for(i=1;i<=256;i++){
+    printf("%d\t%o\t%x\n", i,i,i);
+  }
+
+ return 0;
+}
diff --git a/src/04_33.c b/src/04_33.c
new file mode 100644
index 0000000..c47a86b
--- /dev/null
+++ b/src/04_33.c
@@ -0,0 +1,70 @@
+/*Solution provided by dilippuri*/
+#include <stdio.h>
+
+int main(void){
+  int num;
+  printf("Enter the num: ");
+  scanf("%d", &num);
+  //----------------
+      while (num>100) {
+        printf("C");
+        num = num - 100;
+      }
+      if (num==100) {
+        printf("C\n");
+        return 0;
+      }
+      if (num==99) {
+        printf("IC\n");
+        return 0;
+      }
+  //----------------
+      while (num>50) {
+        printf("L");
+        num = num - 50;
+      }
+      if (num==50) {
+        printf("L\n");
+        return 0;
+      }
+      if (num==49) {
+        printf("IL\n");
+        return 0;
+      }
+    //----------------
+      while (num>10) {
+        printf("X");
+        num = num - 10;
+      }
+      if (num==10) {
+        printf("L\n");
+        return 0;
+      }
+      if (num==9) {
+        printf("IX\n");
+        return 0;
+      }
+    //----------------
+      while (num>5) {
+        printf("V");
+        num = num - 5;
+      }
+      if (num==5) {
+        printf("V\n");
+        return 0;
+      }
+      if (num==4) {
+        printf("IV\n");
+        return 0;
+      }
+    //----------------
+    while (num>1) {
+      printf("I");
+      num = num - 1;
+    }
+    if (num==1) {
+      printf("I\n");
+      return 0;
+    }
+  return 0;
+}
diff --git a/src/04_37.c b/src/04_37.c
new file mode 100644
index 0000000..9ca5b12
--- /dev/null
+++ b/src/04_37.c
@@ -0,0 +1,17 @@
+/*Solution provided by dilippuri*/
+#include <stdio.h>
+
+int main(void){
+  int i,j,k;
+
+  for(i=1;i<=5;i++){
+    for(j=1;j<=3;j++){
+      for(k=1;k<=4;k++){
+        printf("*");
+      }
+      printf("\n");
+    }
+    printf("\n");
+  }
+  return 0;
+}