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Author: Saitle

tempCodeRunnerFile.cpp

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+  // for ( int i = 0; i < 10; i++)
+    // {
+    //     cout<<i<<endl;
+    // }

tut1

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+#include<iostream>
+
+int main(){
+    std::cout<<"Hello world";
+    return 0;
+}

tut1.cpp

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+#include<iostream>
+using namespace std;
+int main(){
+    // for (int i = 0; i < 4; i++)
+    // {
+        
+    //     if(i==2){
+    //         break;
+    //     };
+    //     cout<<i<<endl;
+        
+    // }
+     for (int i = 0; i < 10; i++)
+    {
+        
+        if(i==2){
+            continue;
+        }
+        cout<<i<<endl;
+        
+    }
+    
+    return 0;
+}

tut10.cpp

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+#include<iostream>
+using namespace std;
+
+int main(){
+    int a = 3;
+    int * b = &a; // Pointer --> the data type which stores addr of other datatypes
+    // & --> address of operator
+    cout<<"the address of a is "<<b<<endl;
+    cout<<"the address of a is "<<&a<<endl;
+
+    //* --> dereference operator,
+    cout<<"the address of a is "<<*b<<endl;
+
+    int ** c = &b;
+    cout<<"the value of b is "<<c<<endl;
+    cout<<"The value at address c is "<<*c<<endl; 
+    cout<<"The value at address value_at(value_at(c)) is "<<**c<<endl; 
+    return 0;
+}

tut12.cpp

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+#include<iostream>
+using namespace std;
+int main(){
+    int marks[] = {29, 13, 41, 27, 30};
+    cout<<marks[1]<<endl;
+    cout<<marks[2]<<endl;
+
+    int Mamarks[4];
+    Mamarks[0]=839;
+    Mamarks[1]=8900;
+    Mamarks[2]=2389;
+
+    cout<<"Marks are"<<endl;
+    cout<<Mamarks[0]<<endl;
+    cout<<Mamarks[1]<<endl;
+    cout<<Mamarks[2]<<endl;
+    // for ( int i = 0; i < 4; i++)
+    // {
+    //     cout<<"The value of marks "<<i<<" is "<<marks[i]<<endl;
+    // }
+
+    //Doing the same using while-loop
+    // int i = 0;
+    // while ( i < 4)
+    // {
+    //     cout<<"The value of marks "<<i<<" is "<<marks[i]<<endl;
+    //     i++;
+    // }
+
+    //Pointers and arrays
+    int *p = marks;
+    cout<<"the value of marks[1] is "<< *p<<endl;
+    cout<<"the value of marks[2] is "<< *(p+1)<<endl;
+    cout<<"the value of marks[3] is "<< *(p+2)<<endl;
+    cout<<"the value of marks[4] is "<< *(p+3)<<endl;
+    cout<<"the value of marks[100] is "<< *(p+10)<<endl;
+    cout<<*(p++)<<endl;
+    cout<<*p<<endl;
+    cout<<*(++p)<<endl;
+    cout<<*p<<endl;
+    
+    
+    return 0;
+}

tut13.cpp

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+#include<iostream>
+using namespace std;
+
+// typedef struct employ
+//     {
+//        int id;
+//        char fav_character;
+//        float salary;
+//        string name;
+//     } ep;
+
+// union money
+// {
+//        int rice;
+//        char car;
+//        float salary;
+       
+// };
+
+
+int main(){
+    // ep harry;
+    // ep aditya;
+
+    // harry.id = 2;
+    // harry.fav_character = '$';
+    // harry.salary = 900000;
+  
+    // cout<<harry.id<<endl;
+    // cout<<harry.salary<<endl;
+
+    // union money m1;
+    // m1.rice = 1 
+    // m1.car 
+    enum meal{breakfast, dinner, lunch};
+    meal m1 = lunch;
+    cout<<m1;
+
+
+    
+    return 0;
+}

tut14.cpp

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+#include <iostream>
+using namespace std;
+
+//Function Prototypes
+//func-name(args)
+
+int sum(int a, int b); //acceptable
+// int sum(int, int); //acceptable
+// int sum(int a, b); //unacceptable
+
+void g( void );
+
+
+
+
+
+int main(){
+    int num1, num2;
+    cout<<"enter number 1: "<<endl;
+    cin>>num1;
+
+    cout<<"enter number 2: "<<endl;
+    cin>>num2;
+
+    cout<<"the sum of number 1 and number 2 is:"<<sum(num1, num2)<<endl;
+
+    return 0;
+}
+
+int sum(int a, int b){
+    // formal params a and b will be taking values from actual params num1 & num2
+    int c = a + b;
+}
+
+void g(){
+    cout<<"hello, good night"<<endl;
+}

tut15.cpp

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+#include<iostream>
+using namespace std;
+
+int sum(int a, int b){
+    int c = a + b;
+    return c;
+}
+//swaping using reference variables
+void swapointer(int* num1, int* num2){
+    int temp = *num1;
+    *num1 = *num2;
+    *num2 = temp;
+}
+
+// call by reference using c++ reference variables
+void swaPointerVar(int &num1, int &num2){
+    int temp = num1;
+    num1 = num2;
+    num2 = temp;
+}
+
+int main(){
+    int n1 = 10, n2 = 6;
+    //cout<<"the sum is "<<sum(9, 6)<<endl;
+    cout<<"the value of num1 is " <<n1<<"the value of num2 is " <<n2<<endl;
+    swapointer(&n1, &n2);
+    cout<<"the value of num1 is "<<n1<<"the value of num2 is "<<n2<<endl;
+    return 0;
+}

tut16.cpp

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+#include<iostream>
+using namespace std;
+
+inline int product(int a ,int b){
+    // static int c=0; //eexecutes once
+    // c = c + 1; // c keeps changing
+    return a*b;
+}
+float moneyRec(int curr_money, float factor=1.04){
+    return curr_money * factor;
+}
+
+int main(){
+    // int a,b;
+    // cout<<"enter numbers: "<<endl;
+    // cin>>a>>b;
+    // cout<<"the product of the numbers is "<<product(a,b);
+    int money = 100000;
+    cout<<"If u have "<<money<<"Rs in your bank account, you will receive "<<moneyRec(money)<<" in your account"<<endl;
+    cout<<"VIPs: If u have "<<money<<"Rs in your bank account, you will receive "<<moneyRec(money, 1.1)<<" in your account";
+
+    return 0;
+}

tut17.cpp

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+#include<iostream>
+using namespace std;
+
+int factorial(int n){
+    if (n<=1)
+    {
+       return 1;
+    } 
+    return n * factorial(n-1);
+}
+
+int fibonacci(int n){
+    if (n<2)
+    {
+        return 1;
+    }
+    return fibonacci(n-1) + fibonacci(n-2);
+} 
+    
+int main(){
+    // factorial of a number
+    // 4! = 4*3*2*1 = 24
+    // n = n * (n-1)
+    int a;
+    cout<<"Enter a number:"<<endl;
+    cin>>a;
+    //cout<<"The factorial of " <<a<< " is "<<factorial(a)<<endl; 
+    cout<<"The factorial of " <<a<< " is "<<fibonacci(a)<<endl;  
+    return 0;
+}

tut18.cpp

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+#include<iostream>
+using namespace std;
+
+int sum(int a, int b){
+    cout<<"using function with 2 args"<<endl;
+    return a+b;
+}
+
+int sum(int a, int b, int c){
+    cout<<"using function with 3 args"<<endl;
+    return a+b+c;
+}
+
+int main(){
+    cout<<"Sum is "<<sum(1,2)<<endl;
+    cout<<"sum is "<<sum(5,4,3);
+    return 0;
+}

tut19.cpp

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+#include<iostream>
+using namespace std;
+// program created by me
+
+/* program 
+created
+by me */
+
+int main(){
+    int s = 69;
+    cout<< "ho ho"<< s;
+    return 0;
+}

tut2.cpp

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+#include<iostream>
+using namespace std;
+
+class Employ
+{
+    private:
+        int a, b, c;
+    public:
+        int fo, e;
+        void setdata(int a1, int b1, int c1); //declaration
+        void getdata(){
+            cout<<"the value of a is "<<a<<endl;
+            cout<<"the value of c is "<<c<<endl;
+            cout<<"the value of b is "<<b<<endl;
+            cout<<"the value of e is "<<e<<endl;
+        }
+
+
+};
+
+void Employ :: setdata(int a1, int b1, int c1){
+    a = a1;
+    b = b1;
+    c = c1;
+}
+main(){
+    Employ saiman;
+    //saiman.a = 00 --> will throw error as defined private
+    saiman.e = 10;
+    saiman.fo = 80;
+    saiman.setdata(2, 3, 6);
+    saiman.getdata(); 
+    return 0;
+}