diff --git a/Q1.cpp b/Q1.cpp
new file mode 100644
index 0000000..35878d9
--- /dev/null
+++ b/Q1.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+using namespace std;
+
+int main()
+{   int num;
+    cout<<"Enter the Number: ;
+    cin>>num;
+    if(num == 0)
+            cout << "Zero"; else (num > 0) ? cout << "Positive": cout << "Negative";
+    
+    return 0;
+}
diff --git a/Q2.cpp b/Q2.cpp
new file mode 100644
index 0000000..2b957b2
--- /dev/null
+++ b/Q2.cpp
@@ -0,0 +1,8 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int num;
+    cout<<"Enter the number: ";
+    cin>>num;
+    num%2==0?cout<<"Even Number!!":cout<<"Odd Number!!";
+}
diff --git a/Q3.cpp b/Q3.cpp
new file mode 100644
index 0000000..2e11222
--- /dev/null
+++ b/Q3.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int num;
+    cout<<"Enter the number: ";
+    cin>>num;
+    int sum=0;
+    for(int i=0;i<num;i++){
+        sum+=i;
+    }
+    cout<<"Sum of first "<<num<<" numbers is: "<<sum<<endl;
+}
diff --git a/Q4.cpp b/Q4.cpp
new file mode 100644
index 0000000..04a274f
--- /dev/null
+++ b/Q4.cpp
@@ -0,0 +1,12 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int l,u;
+    cin>>l>>u;
+    int sum=0;
+    for(int i=l;i<=u;i++){
+        sum+=i;
+    }
+    cout<<"Sum of numbers in range: "<<l<<" to "<<u<<" is "<<sum<<endl;
+    return 0;
+}
diff --git a/Q5.cpp b/Q5.cpp
new file mode 100644
index 0000000..ddb0a5f
--- /dev/null
+++ b/Q5.cpp
@@ -0,0 +1,9 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int first_num,sec_num;
+    cin>>first_num>>sec_num;
+    int res = first_num>sec_num?first_num:sec_num;
+    cout<<"Greatest of two numbers is: "<<res<<endl;
+    return 0;
+}
diff --git a/Q6.cpp b/Q6.cpp
new file mode 100644
index 0000000..451d16f
--- /dev/null
+++ b/Q6.cpp
@@ -0,0 +1,18 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int x,y,z;
+    cin>>x>>y>>z;
+    cout<<"The greatest of the three numbers is: ";
+    if(x>y){
+        if(x>z)
+        cout<<x;
+        else
+        cout<<z;
+    }else
+    if(y>z)
+    cout<<y;
+    else
+    cout<<z;
+    return 0;
+}
diff --git a/Q7.cpp b/Q7.cpp
new file mode 100644
index 0000000..63556b1
--- /dev/null
+++ b/Q7.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+using namespace std;
+int main() {
+    int year;
+    cin>>year;
+    if(year%400==0 || year%4==0 && year%100!=0)
+    cout<<"Leap year!";
+    else
+    cout<<"Not a leap year!";
+}