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C++ Program to calculate (a + b + c)2.

Let see the program to calculate (a + b + c)2.


Example:

    

  1. To calculate (a + b + c)2.
    2. 

  2. Formula: (a + b + c)2=a2+b2+c2+ 2*a*b + 2*b*c + 2*c*a.
    3. 

  3. Input a=1,b=2,c=3
    4. 

  4. (a + b + c)2 =36
    5. 





#include <iostream>

using namespace std;
int main()
{
    int a,b,c,result;
    cout<<"Enter a value :";
    cin>>a;
    cout<<"Enter b value :";
    cin>>b;
    cout<<"Enter c value :";
    cin>>c;
    result=a*a+b*b+c*c+2*a*b+2*b*c+2*c*a;
    cout<<" Result (a+b+c)^2 = :"<
Output:

 Enter a value :2
 Enter b value :3
 Enter c value :4

 Result (a+b+c)^2 = :81



/* C++ Program to calculate (a+b+c)2 using pow() function. */
#include <iostream>

using namespace std;
#include <math.h>
int main()
{
    int a,b,c,result;
    cout<<"Enter a value :";
    cin>>a;
    cout<<"Enter b value :";
    cin>>b;
    cout<<"Enter c value :";
    cin>>c;
    result=pow(a,2)+pow(b,2)+pow(c,2)+2*a*b+2*b*c+2*c*a;
    cout<<" Result (a+b+c)^2 = :"<<result<<endl;
    return 0;
}
Output:

 Enter a value :1
 Enter b value :2
 Enter c value :3

 Result (a+b+c)^2 = :36

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