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Commit 14d3b82

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1 parent f3bcc5c commit 14d3b82

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‎Practise Programs/1sum.cpp

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#include<iostream>
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using namespace std;
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int main()
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{
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int a,b,sum; //variables
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cout<<"Enter Number a =\t"; //\t for space
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cin>>a;
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cout<<"Enter Number b =\t";
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cin>>b;
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sum = a+b; // + operator is used
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cout<<"Sum = "<<sum;
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return 0;
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}

‎Practise Programs/2sizeofoperator.cpp

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#include<iostream>
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using namespace std;
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int main()
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{
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int i;
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float f;
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cout<<"Size of int = "<<sizeof(i);
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cout<<"\nSize of int = "<<sizeof(int);
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cout<<"\nSize of float = "<<sizeof(f);
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cout<<"\nSize of float = "<<sizeof(float);
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cout<<"\nSize of char = "<<sizeof(char);
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return 0;
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}

‎Practise Programs/3localandglobal.cpp

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#include<iostream>
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using namespace std;
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int x=20;
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int main()
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{
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int x=10;
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cout<<"Local Variable = "<<x;
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cout<<"\nGlobal Variable = "<<::x; // To access global variable
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return 0;
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}

‎Practise Programs/4manipulators.cpp

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#include<iostream>
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#include<iomanip> //Required for these manipulators
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using namespace std;
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int main()
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{
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int i;
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cout<<"Enter a number = ";
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cin>>i; // or cin>>hex>>i; to get hexadecimal input only
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cout<<"Hexadecimal value = "<<hex<<i<<endl; // 1.endl Manipulator:For next line
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cout<<"Octal value = "<<oct<<i<<endl; // 2.hex,dec,oct for converting base to hexadecimal(16),octal(8),decimal(10)
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cout<<"Decimal value = "<<dec<<i<<endl;
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cout<<"Enter hexadecimal number = ";
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cin>>setbase(16)>>i; // 3.setbase(b) simailar to above toset base to hex, dec or oct
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cout<<setw(27)<<"Hexadecimal value = "<<setbase(16)<<i<<endl; //4.setw() used to set the width of chacters in program
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cout<<setw(27)<<"Octal value = "<<setbase(8)<<i<<endl;
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cout<<setw(27)<<"Decimal value = "<<setbase(10)<<i<<endl;
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int age=22,rollno=076;
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cout<<setfill('#');
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cout<<"Age"<<endl;
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cout<<setw(4)<<age<<endl;
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cout<<"Roll No"<<endl;
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cout<<setw(4)<<rollno<<endl;
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// float a=129.455396;
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// cout<<"Float with 2 precision = "<<setprecision(2)<<a<<endl; //setprecision used to set precision of decimal numbers
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// cout<<"Float with 4 precision = "<<setprecision(4)<<a<<endl;
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// cout<<"Float with 6 precision = "<<setprecision(6)<<a<<endl;
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return 0;
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}
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#include<iostream>
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using namespace std;
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int main()
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{
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int a,b;
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cout<<"Enter the values for a and b = "<<endl;
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cin>>a>>b;
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a=a+b;
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b=a-b;
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a=a-b;
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cout<<"After interchanging "<<endl<<"a = "<<a<<" b = "<<b;
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return 0;
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}

‎Practise Programs/6terneryoperator.cpp

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#include<iostream>
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using namespace std;
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int main()
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{
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int a,b,c;
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cout<<"Enter three numbers a,b,c : "<<endl;
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cin>>a>>b>>c;
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int d=(a>b)?((a>c)?a:c) : ((b>c)?b:c);
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cout<<"Greatest Number = "<<d;
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return 0;
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}
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#include<iostream>
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using namespace std;
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int main()
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{
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char c1;
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cout<<"Enter a character = ";
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cin>>c1;
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char c2=(c1>='a'&& c1<='z')?('A'+c1-'a'):c1;
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cout<<"Uppercase Equivalent = "<<c2;
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return 0;
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}

‎Practise Programs/8ifelseodeven.cpp

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#include<iostream>
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using namespace std;
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int main()
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{
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int num;
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cout<<"Enter the number = ";
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cin>>num;
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if(num%2==0)
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{
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cout<<"Numbr is even"<<endl;
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}else{
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cout<<"Number is odd";
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}
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return 0;
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}
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#include<iostream>
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#include<math.h>
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using namespace std;
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int main()
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{
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float a,b,c,x1,x2;
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cout<<"Enter values of a,b,c :";
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cin>>a>>b>>c;
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float d=(b*b)-(4*a*c);
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if(d==0)
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{
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x1=x2=(-b)/(2*a);
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cout<<"Roots are real and equal x1=x2= "<<x1;
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}else if(d>0)
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{
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x1=((-b)+sqrt(d))/(2*a);
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x2=((-b)-sqrt(d))/(2*a);
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cout<<"Roots are x1= "<<x1<<"\tx2= "<<x2;
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}else
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{
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cout<<"Roots are imaginary";
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}
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return 0;
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}

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