Add Till Arrays

NCRfunction.cpp

@@ -0,0 +1,24 @@
+
+#include<iostream>
+using namespace std;
+int factorial(int n){
+    int fact=1;
+    for(int i=1;i<=n;i++){
+        fact=fact*i;
+    }
+    return fact;
+}
+int nCr(int n, int r){
+int numerator = factorial(n);
+int denominator=factorial(r)*factorial(n-r);
+int answer=numerator/denominator;
+return answer;
+}
+int main(){
+
+int n,r;
+cout<<"enter n and r"<<endl;
+cin>>n>>r;
+
+cout<<"Answer is :"<<nCr(n,r)<<endl;
+}  

TAP2.cpp

@@ -0,0 +1,20 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+      char start = 'A' ;
+    while (i <=n )
+    {
+        int j=1;
+        while (j<=i){
+         cout<<start<< " " ;
+          start++;  
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }

TAP3.cpp

@@ -0,0 +1,21 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+      char start = 'A' ;
+    while (i <=n )
+    {
+        int j=1;
+        while (j<=i){
+            char ch = ('A'+i+j-2);
+         cout<<ch<< " " ;
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }
+

TAP4.cpp

@@ -0,0 +1,25 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+
+    while (i<=n)
+    {
+        int space = n-i;
+        while (space)
+        {
+            cout<<" ";
+            space--;
+        }
+         int j=1;
+        while (j<=i){
+            cout <<"*";  
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }

TAP5.cpp

@@ -0,0 +1,21 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+
+    while (i <=n )
+    {
+        int j=1;
+        char start =  'A' + n-i;
+        while (j<=i){
+         cout<<start<< " " ;
+          start++;  
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }

TAP6.cpp

@@ -0,0 +1,21 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+
+    while (i<=n)
+    {
+         char star = n-i;
+            cout<<" ";
+         int j=1;
+        while (j<=i){
+            cout <<"*";  
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }

arrays.cpp

@@ -0,0 +1,68 @@
+#include <iostream>
+using namespace std;
+void printarray(int arr[], int size)
+{
+    cout << "printing the array elements:" << endl;
+    for (int i = 0; i <= size; i++)
+    {
+        cout << arr[i] << " ";
+    }
+    cout << "printing done" << endl;
+}
+int main()
+{
+    int number[15];
+    cout << "value at 14 index is:" << number[14] << endl;
+
+    // initializing an array
+    int second[3] = {5, 7, 11};
+    // accessing an element
+    cout << "value at second index:" << second[2] << endl;
+    int third[15] = {2, 7};
+
+    printarray(third, 15);
+
+    int n = 15;
+    // cout << "printing the array elements:" << endl;
+    // for (int i = 0; i <= n; i++)
+    // {
+    //     cout << third[i] << " ";
+    // }
+    // intialixing all locations with 0
+    int fourth[10] = {0};
+    int m = 10;
+    printarray(fourth, 10);
+    // print the array elements
+    // cout << "printing the array elements:" << endl;
+    // for (int i = 0; i <= m; i++)
+    // {
+    //     cout << fourth[i] << " ";
+    // }
+
+    // intialixing all locations with 1 (not possible with below line)
+    int fifth[10] = {1};
+    int x = 10;
+    printarray(fifth, 10);
+    //     cout << "printing the array elements:" << endl;
+    //     for (int i = 0; i <= x; i++)
+    //     {
+    //         cout << fifth[i] << " ";
+    //     }
+    int fifthsize = sizeof(fifth) / sizeof(int);
+    cout << "size of fifth is:" << fifthsize << endl;
+    char ch[5] = {'a', 'b', 'c', 'd', 'e'};
+    cout << ch[4] << endl;
+
+    cout << "printing the array elements:" << endl;
+    for (int i = 0; i <= 5; i++)
+    {
+        cout << ch[i] << " ";
+    }
+    cout << "printing done" << endl;
+
+    double firstdouble[5];
+    float firstfloat[6];
+    bool firstbool[9];
+
+    cout << "everything is alright" << endl;
+}

bitwiseoperators.cpp

@@ -0,0 +1,23 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int a= 4;
+    int b = 6;
+    cout <<"a & b ="<< (a&b)<<endl;
+     cout <<"a | b ="<< (a|b)<<endl;
+     cout <<"~a ="<< (~a)<<endl;
+      cout <<"a ^ b ="<< (a^b)<<endl;
+      cout<<(17>>2)<<endl;
+      cout<<(17>>1)<<endl;
+      cout<<(19<<1)<<endl;
+      cout<<(19<<2)<<endl;
+      cout<<(5<<2)<<endl;
+
+      int i = 7 ;
+      cout<< (++i) <<endl;
+      cout<< (i++) <<endl;
+      cout<< (i--) <<endl;
+      cout<< (--i) <<endl;
+
+
+      }

checkprimenumberusingfunctions.cpp

@@ -0,0 +1,28 @@
+
+#include<iostream>
+using namespace std;
+//1--> prime number
+//0-->not ba prime number
+bool isprime(int n){
+    for(int i=2;i<=n;i++){
+        if(n%i==0){
+            return 0;
+        }
+        else{
+            return 1;
+        }
+    }
+}
+int main(){
+
+int num;
+cout<<"enter the number:"<<endl;
+cin>>num;
+if (isprime(num)){
+    cout<<"the given number is a prime number"<<endl;
+}
+else{
+    cout<<"the given number is odd number"<<endl;
+}
+
+}  

continuestatement.cpp

@@ -0,0 +1,10 @@
+ #include<iostream>
+using namespace std;
+int main(){
+    for(int i=1;i<=5;i++){
+        cout<<"hi"<<endl;
+        cout<<"Hey"<<endl;
+        continue;
+        cout<<"Reply toh karde"<<endl;
+    }
+    }

conversionofbinarytodecimal.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+#include <cmath>
+using namespace std;
+
+int main() {
+    int n;
+    cout << "Enter the value of n: " << endl;
+    cin >> n;
+    int answer = 0;
+    int i = 0;
+    while (n != 0) {
+        int digit=n%10;
+        if(digit==1){
+            answer = answer+ pow(2,1);
+
+        }
+        n=n/10;
+        i++;
+}
+cout<<"answer is:"<<answer<<endl;
+}

conversionofdecimaltobinary.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <cmath>
+using namespace std;
+int main()
+{
+    int n;
+    cout << "enter the value of n" << endl;
+    cin >> n;
+    int answer = 0;
+    int i = 0;
+    while (n != 0)
+    {
+        int bit = n & 1;
+        answer = (bit * pow(10, i)) + answer;
+        n = n >> 1;
+        i++;
+    }
+    cout << "answer is:" << answer << endl;
+}

difficultpattern.cpp

@@ -0,0 +1,20 @@
+#include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int i = 1;
+    while (i <=n )
+    {
+        int j=1;
+        int value=i;
+        while (j<=i){
+            cout<<value<< " " ;
+            value++;
+            j=j+1;
+        }
+        cout<<endl;
+        i=i+1;     
+        } 
+    }

evenoddfunction.cpp

@@ -0,0 +1,25 @@
+
+#include<iostream>
+using namespace std;
+//1  --> even
+//0 --> odd
+bool iseven(int a){
+    //odd
+     if(a %2!=0)
+     return 0;
+     else{
+        return 1;
+     }
+}
+int main(){
+
+int num;
+cout<<"enter the number:"<<endl;
+cin>>num;
+if  (iseven(num)){
+    cout<<"numer is even"<<endl; 
+}
+    else {
+    cout<<"number is odd"<<endl;
+    }
+}  

fibonacciseries.cpp

@@ -0,0 +1,16 @@
+ #include<iostream>
+using namespace std;
+int main(){
+    int n;
+    cout<<"enter the value of n"<<endl;
+    cin>>n;
+    int a= 0;
+    int b= 1;
+    cout<<a<<" "<<b<<" ";
+    for(int i=1;i<=n;i++){
+         int nextnumber=a+b;
+         cout<<nextnumber<<" ";
+         a=b;
+         b=nextnumber;
+    }
+    }