diff --git a/C++/h1.cpp b/C++/h1.cpp
index 2d23603..daa0a4f 100644
--- a/C++/h1.cpp
+++ b/C++/h1.cpp
@@ -1,9 +1,11 @@
 // find the longest pallindrome in the string
 // This program is designed to find the longest palindrome in a given string
-// ie. if the string given is 'djhfacdadcaop' the longest palindrom is 'acdadca' 
+// ie. if the string given is 'djhfacdadcaop' the longest palindrom is 'acdadca'
 // which should be the return value for the function longest pallindrome(char* s).
 
 #include<iostream>
+#include<cstring> //
+
 using namespace std;
 
 void printSubStr(
@@ -19,7 +21,7 @@ int longestPalSubstr(string str)
 
 	bool table[n][n];
 
-	memset(table, 0, sizeof(table));
+	memset(table, 0, sizeof(table)); //
 
 	int maxLength = 1;
 
diff --git a/C++/h1.exe b/C++/h1.exe
new file mode 100644
index 0000000..292c635
Binary files /dev/null and b/C++/h1.exe differ
diff --git a/C++/h1.o b/C++/h1.o
new file mode 100644
index 0000000..34b8747
Binary files /dev/null and b/C++/h1.o differ
diff --git a/C++/h2.exe b/C++/h2.exe
new file mode 100644
index 0000000..bd06b2f
Binary files /dev/null and b/C++/h2.exe differ
diff --git a/C++/h2.o b/C++/h2.o
new file mode 100644
index 0000000..793ae22
Binary files /dev/null and b/C++/h2.o differ
diff --git a/C++/m1.o b/C++/m1.o
new file mode 100644
index 0000000..daabb59
Binary files /dev/null and b/C++/m1.o differ
diff --git a/C++/m3.cpp b/C++/m3.cpp
index d6995fd..e948566 100644
--- a/C++/m3.cpp
+++ b/C++/m3.cpp
@@ -19,5 +19,5 @@ main() {
   char *myval = initialize();
   cin >> *myval;
   cout << "Variable intialized" << endl;
-  do_something_with(myval);
+   do_something_with(char * myval);
 }
diff --git a/C++/m3.exe b/C++/m3.exe
new file mode 100644
index 0000000..03750ba
Binary files /dev/null and b/C++/m3.exe differ
diff --git a/C++/m3.o b/C++/m3.o
new file mode 100644
index 0000000..4ea5d7a
Binary files /dev/null and b/C++/m3.o differ
diff --git a/C++/m6.cpp b/C++/m6.cpp
index 5524bce..50a22ea 100644
--- a/C++/m6.cpp
+++ b/C++/m6.cpp
@@ -4,7 +4,7 @@
 #include<string>
 
 int main(){
-    std :: string s = "Hello World";
+    std :: string s = "a . ,";//doesnt work for special characters.
 
     for(int i=0;i < s.length(); i++){
         s[i] = toupper(s[i]);
diff --git a/C++/m6.exe b/C++/m6.exe
new file mode 100644
index 0000000..63f6f6b
Binary files /dev/null and b/C++/m6.exe differ
diff --git a/C++/m6.o b/C++/m6.o
new file mode 100644
index 0000000..a57952d
Binary files /dev/null and b/C++/m6.o differ
diff --git a/C++/s1.cpp b/C++/s1.cpp
index 95629da..472a4e3 100644
--- a/C++/s1.cpp
+++ b/C++/s1.cpp
@@ -4,10 +4,10 @@
 using namespace std;
 
 int reverse(int x) {
-    long r=0;                                  
+    long r=0;
     while(x){
-        r=r*10+x/10;
-        x=x/10;                                   
+        r=r*10+x%10;
+        x=x/10;
     }
     return r;
 }
diff --git a/C++/s1.exe b/C++/s1.exe
new file mode 100644
index 0000000..ddf9615
Binary files /dev/null and b/C++/s1.exe differ
diff --git a/C++/s1.o b/C++/s1.o
new file mode 100644
index 0000000..a893f39
Binary files /dev/null and b/C++/s1.o differ
diff --git a/C++/s2.exe b/C++/s2.exe
new file mode 100644
index 0000000..cc2b9e4
Binary files /dev/null and b/C++/s2.exe differ
diff --git a/C++/s2.o b/C++/s2.o
new file mode 100644
index 0000000..47e4735
Binary files /dev/null and b/C++/s2.o differ
diff --git a/C++/s3.cpp b/C++/s3.cpp
index 854ed28..d653631 100644
--- a/C++/s3.cpp
+++ b/C++/s3.cpp
@@ -4,7 +4,7 @@
 using namespace std;
 
 int i = 5;
-int j;
+int j=7;//initialize j(we initialized j as 7)
 
 int foo(int j) {
   for (i=0; i<j; i++){
diff --git a/C++/s3.exe b/C++/s3.exe
new file mode 100644
index 0000000..983bf27
Binary files /dev/null and b/C++/s3.exe differ
diff --git a/C++/s3.o b/C++/s3.o
new file mode 100644
index 0000000..7ed0244
Binary files /dev/null and b/C++/s3.o differ
diff --git a/C++/s4.cpp b/C++/s4.cpp
index 727e620..f29cb08 100644
--- a/C++/s4.cpp
+++ b/C++/s4.cpp
@@ -8,12 +8,14 @@ using namespace std;
 
 int random(){
     srand(time(0));
-    return rand();
+    int t=rand();
+    return t;
 }
 
 
 int main(void){
     int i=6, j=7;
+
     int val = Random(j-i+1);
 
     cout << val << endl;
diff --git a/C++/s4.exe b/C++/s4.exe
new file mode 100644
index 0000000..cfa901c
Binary files /dev/null and b/C++/s4.exe differ
diff --git a/C++/s4.o b/C++/s4.o
new file mode 100644
index 0000000..224aaa1
Binary files /dev/null and b/C++/s4.o differ
diff --git a/C++/s5.cpp b/C++/s5.cpp
index 3c05697..c38ad19 100644
--- a/C++/s5.cpp
+++ b/C++/s5.cpp
@@ -1,13 +1,14 @@
 #include<iostream>
+#include<string.h>
 using namespace std;
 
 
 int main(void){
     string string1 = "Hello";
-    string string2 = "Horld";
-
+    string string2 = "Hello";
     if (string1 == string2)
     cout << "Equal";
+
     else
     cout << "Not Equal";
 }
diff --git a/C++/s5.exe b/C++/s5.exe
new file mode 100644
index 0000000..58b66ff
Binary files /dev/null and b/C++/s5.exe differ
diff --git a/C++/s5.o b/C++/s5.o
new file mode 100644
index 0000000..d5206f9
Binary files /dev/null and b/C++/s5.o differ
diff --git a/C++/s6.cpp b/C++/s6.cpp
index 736760a..20d91df 100644
--- a/C++/s6.cpp
+++ b/C++/s6.cpp
@@ -5,14 +5,23 @@ using namespace std;
 int maxSubArraySum(int a[], int size)
 {
     int max_so_far = INT_MIN, max_ending_here;
- 
+
     for (int i = 0; i < size; i++) {
         max_ending_here = max_ending_here + a[i];
         if (max_so_far < max_ending_here)
             max_so_far = max_ending_here;
- 
+
         if (max_ending_here < 0)
             max_ending_here = max_so_far;
     }
     return max_so_far;
 }
+int main()
+{
+
+    int arr[]={-1,-2,-3,-3,-8};
+    cout<<maxSubArraySum(arr,5);
+
+    return 0;
+
+}
diff --git a/C++/s6.exe b/C++/s6.exe
new file mode 100644
index 0000000..7d04a13
Binary files /dev/null and b/C++/s6.exe differ
diff --git a/C++/s6.o b/C++/s6.o
new file mode 100644
index 0000000..7267620
Binary files /dev/null and b/C++/s6.o differ