Greatest number of three numbers in C++

 #include<iostream>

using namespace std;

int main()

{

int x,y,z,greatest;

cout<<"enter first number ";

cin>>x;

cout<<"enter second number ";

cin>>y;

cout<<"enter third number ";

cin>>z;

greatest=x;

if(y>greatest)

greatest=y;

if(z>greatest)

greatest=z;

cout<<"\nlargest number is : "<<greatest;

return 0;

}

Output:

enter first number 5

enter second number 6

enter third number 9

largest number is : 9

Or

#include<iostream>

using namespace std;

int main()

{

int x,y,z;

cout<<"enter first number ";

cin>>x;

cout<<"enter second number ";

cin>>y;

cout<<"enter third number ";

cin>>z;

if(x>y && x>z)

{

cout<<"x is greater than y";

cout<<"x is greater than z";

}

else if(y>x && y>z)

{

cout<<"y is greater than x";

cout<<"y is greater than z";

}

else

{

cout<<"z is greater than y and x";

}

}

Output

enter first number 5

enter second number 6

enter third number 9

z is greater than y and x

OR

#include<iostream>

using namespace std;

int main()

{

int num1,num2,num3;

cout<<"enter first number : ";

cin>>num1;

cout<<"enter second number : ";

cin>>num2;

cout<<"enter third number : ";

cin>>num3;

  cout<<"\t Program to find greatest number among three number\n";

  

  if(num1>=num2)

  {

  if(num1>num3)

  {

  cout<<num1<<" is greatest number ";

  }

  else

  {

  cout<<num3<<" is greatest number ";

  }

  }

  else if(num2>=num1)

  {

  if(num2>num3)

  {

  cout<<num2<<" is greatest number ";

  }

  else

  {

  cout<<num3<<" is greatest number ";

  }

  }

}

output:

enter first number : 3

enter second number : 6

enter third number : 9

         Program to find greatest number among three number

9 is greatest number