What is C++ ?
C++ is close to the metal — just a few small steps away from assembly code. While other programming languages are built around the business domain, C++ is built around the computer. This gives you a much greater understanding of all the building blocks of programming (useful when you’re starting out).
Top Programs C++
Write a program in C++ to print an integer value.
#include<iostream>
using namespace std;
int main()
{
int a;
cout<<"Enter integer\n";
cin>>a;
cout<<"Integer is "<<a;
return 0;
}
Output:
Enter integer
10
Integer is 10
Write a program in C++ to addition of two number.
#include<iostream>
using namespace std;
int main()
{
int a,b,sum;
cout<<"Enter the 1st number\n";
cin>>a;
cout<<"Enter the 2nd number\n";
cin>>b;
sum=a+b;
cout<<"Sum of two number "<<sum;
return 0;
}
Output:
Enter the 1st number
10
Enter the 2nd number
20
Sum of two number 30
Write a program in C++ to subtraction of two number.
#include<iostream>
using namespace std;
int main()
{
int a,b,sub;
cout<<"Enter the 1st number\n";
cin>>a;
cout<<"Enter the 2nd number\n";
cin>>b;
sub=a-b;
cout<<"Subtraction of two number "<<sub;
return 0;
}
Output:
Enter the 1st number
10
Enter the 2nd number
20
Subtraction of two number -10
Write a program in C++ to multiplication of two number.
#include<iostream>
using namespace std;
int main()
{
int a,b,mul;
cout<<"Enter the 1st number\n";
cin>>a;
cout<<"Enter the 2nd number\n";
cin>>b;
mul=a*b;
cout<<"Multiplication of two number "<<mul;
return 0;
}
Output:
Enter the 1st number
10
Enter the 2nd number
20
Multiplication of two number 200
Write a program in C++ to Division of two number.
#include<iostream>
using namespace std;
int main()
{
int a,b,div;
cout<<"Enter the 1st number\n";
cin>>a;
cout<<"Enter the 2nd number\n";
cin>>b;
div=a/b;
cout<<"Division of two number "<<div;
return 0;
}
Output:
Enter the 1st number
20
Enter the 2nd number
10
Sum of two number 2
Write a program in C++ to swap two number with the help of third variable.
#include<iostream>
using namespace std;
int main()
{
int a,b,c;
cout<<"Enter the first number\t";
cin>>a;
cout<<"\nEnter the second number\t";
cin>>b;
c=a;
a=b;
b=c;
cout<<"First number is\t"<<a;
cout<<"\nSecond number is\t<<b;
return 0;
}
Output:
Enter the first number 12
Enter the second number 13
First number is 13
Second number is 12
Write a program in C++ to swap two number without the help of third variable.
#include<iostream>
using namespace std;
int main()
{
int a,b;
cout<<"Enter the first number\t";
cin>>a;
cout<<"\nEnter the second number\t";
cin>>b;
a=a+b;
b=a-b;
a=a-b;
cout<<"First number is\t"<<a;
cout<<"\nSecond number is\t<<b;
return 0;
}
Output:
Enter the first number 12
Enter the second number 13
First number is 13
Second number is 12
Write a program in C++ to find the greatest number in two numbers with the help of if/else.
#include<iostream>
using namespace std;
int main()
{
int a,b;
cout<<"Enter the first number\t";
cin>>a;
cout<<"Enter the second number\t";
cin>>b;
if(a>b)
cout<<"Greatest number is\t"<<a;
else
cout<<"Greatest number is\t"<<b;
return 0;
}
Output:
Enter the first number 12
Enter the second number 13
Greatest number is 13
Write a program in C++ to print a massage on output screen.
#include<iostream>
using namespace std;
int main()
{
cout<<"Hello world";
return 0;
}
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