diff --git a/1.cpp b/1.cpp
index 190c209..2659a86 100644
--- a/1.cpp
+++ b/1.cpp
@@ -2,12 +2,12 @@
 using namespace std;
 
 class container {
-
+protected:
 	int size;
 public:
 	float* p;
 	container(int s) :size(s){}
-	const int& getsize() { return size;}
+	 int& getsize() { return size;}
 
 };
 
@@ -15,26 +15,40 @@ class vector :public container {
 
 	int call_num;
 public:
-	explicit vector(int l) :len(l),size(1 * 100){
+	explicit vector(int l) :len(l),container(1 * 100){
 		p = new float();
 	}
 	int len;
-	int& getlen() const {
+	int& getlen() {
 		call_num ++;
 		return len;
 	}
 	~vector() = default;
+ 	vector (vector& vec):container(vec.len)
+	{
+		call_num=vec.call_num;
+		p=new float[size];
+		len=vec.len;
+		for(int i=0;i<size;i++)
+		{
+			p[i]=vec.p[i];
+		}
+
+	}
+
 };
 
 int main() {
 
 	container c1(100);
-	vector v1 = c1;
+	vector v1(100);
 	container& r1 = v1;
-	container c2 = 100;
+	container c2(100);
 	c2.getsize() = 20;
 	cout << c2.getsize();
-	vector v2 = 100;
-	v2.getlen = 40;
+	vector v2(100);
+	v2.getlen()= 40;
 	cout << v2.getlen();
+	// result = 2040 
+	//Output = 2040
 }
\ No newline at end of file
diff --git a/2.cpp b/2.cpp
index 6a27746..a161690 100644
--- a/2.cpp
+++ b/2.cpp
@@ -6,14 +6,20 @@ using namespace std;
 // count all the specific char in the whole array of strings
 int countAllSpecificChars(string sArr[], int arrLength, char specificChar) {
     int count;
-    for (int i = 0; i <= arrLength; ++i)
-        for (int j = 0; j <= sArr[i].size(); ++j)
-            // if the jth char of the string is the specific char
-            if (sArr[i][j] = specificChar)
-                count++;
+    for (int i = 0; i < arrLength; ++i)
+        {
+            for (int j = 0; j < sArr[i].length(); ++j)
+            {// if the jth char of the string is the specific char
+            if (sArr[i][j] == specificChar)
+               {
+                 count++;
+               }
+            }
+        }
     return count;
 }
 
+
 int main() {
     string sArr[4] = {
             "I am",
@@ -24,4 +30,19 @@ int main() {
     char findIt;
     cin >> findIt;
     cout << countAllSpecificChars(sArr, 4, findIt);
+    //result for(a)=3;
+    //result for(I)=1;
+    //result for(m)=1;
+    //result for(i)=1;
+    //result for(p)=1;
+    //result for(c)=1;
+    //result for(s)=2;
+    //result for(l)=1;
+
+
+
+
+
+
+    return 0;
 }
\ No newline at end of file
diff --git a/3.cpp b/3.cpp
index c8732ef..f730160 100644
--- a/3.cpp
+++ b/3.cpp
@@ -1,9 +1,10 @@
 #include<stdio.h>
 #include<stdlib.h>
+#pragma warning(disable:4996)
 #define MAX_SIZE 200
 int arr[MAX_SIZE];
 
-typedef struct alfa * alfaptr;
+typedef struct alfa* alfaptr;
 
 struct alfa {
 	long long x;
@@ -45,7 +46,7 @@ void search(int x)
 			printf("ERROR2");
 			break;
 		}
-		node = node->next;
+	node = node->next;
 }
 
 void rpop() {//pop last element
@@ -66,9 +67,9 @@ void set()
 int size()
 {
 	alfaptr node = front;
-	int count;
+	int count = 0;
 	while (node)
-		count++;node = node->next;
+		count++; node = node->next;
 	return count;
 }
 
@@ -88,7 +89,7 @@ int average()
 {
 
 	alfaptr node = front;
-	int sum = 0, count;
+	int sum = 0, count = 0;
 	while (node) {
 		sum += node->x;
 		count++;
@@ -97,7 +98,7 @@ int average()
 	return sum / count;
 }
 
-void main()
+int main()
 {
 	int cmd;
 	long long int x;
@@ -109,6 +110,7 @@ void main()
 		case 1://push
 			scanf("%lld", &x);
 			push(x);
+			// از دفعه دوم به چون front دیگر null نیست به مشکل میخورد
 			break;
 		case 2://pop
 			pop();
diff --git a/4.cpp b/4.cpp
index a9a32f2..f4dadc9 100644
--- a/4.cpp
+++ b/4.cpp
@@ -4,6 +4,7 @@ int main()
     float arr[5] = { 12.5, 10.0, 13.5, 90.5, 0.5 };
     float *ptr1 = &arr[0];
     float *ptr2 = ptr1 + 3;
-    printf("%f", *ptr2 - *ptr1);
+    printf("%f", (*ptr2 - *ptr1));
+    //Output = 78.000000
     return 0;
 }
\ No newline at end of file
diff --git a/5.cpp b/5.cpp
index e9a1737..059f687 100644
--- a/5.cpp
+++ b/5.cpp
@@ -3,8 +3,11 @@ int main()
 {
     int arr[] = { 10, 20, 30, 40, 50, 60 };
     int *ptr1 = arr;
+    // printf("%d\n",*ptr1);
     int *ptr2 = arr + 5;
     printf("%d\n", (*ptr2 - *ptr1));
     printf("%c", (char)(*ptr2 - *ptr1));
+    // Output = 50
+    //Output = 2
     return 0;
 }
\ No newline at end of file
diff --git a/6.cpp b/6.cpp
index bb721c3..fc582c7 100644
--- a/6.cpp
+++ b/6.cpp
@@ -7,5 +7,6 @@ int main()
 	a = 512;
 	x[0] = 1;
 	printf("%d\n", a);
+	//Output = 512
 	return 0;
 }
diff --git a/7.cpp b/7.cpp
index 7b065a0..86e18a5 100644
--- a/7.cpp
+++ b/7.cpp
@@ -6,5 +6,6 @@ int main()
 	++*p;
 	p += 2;
 	printf("%d", *p);
+	//Output = 3
 	return 0;
 }
\ No newline at end of file
diff --git a/8.cpp b/8.cpp
index 76b870c..b0623cb 100644
--- a/8.cpp
+++ b/8.cpp
@@ -8,6 +8,6 @@ int main() {
 	printf("%c%c ", *f(str), *(f(str) + 1));
 	printf("%c%c%c%c\n", **str, *(*(str + 1) + 1), *((str + 2)[-1] + 1), **&*(&str[-1] + 1));
 
-
+	//Output = Be WooW 
 	
 }