C++ Exercises
C++ Program to calculate (a - b)3.
Let see the program to calculate (a - b)3.
Example:
To calculate (a - b)3.
Formula: (a - b)3 =a3 – 3*a2*b + 3*a*b2 – b3
Input a=1,b=2
(a - b)3 =-1
#include <iostream> using namespace std; int main() { int a,b,result; cout<<"Enter a value :"; cin>>a; cout<<"Enter b value :"; cin>>b; result=a*a*a -b*b*b -3*a*a*b +3*a*b*b; cout<<" Result (a - b)^3 = :"<<result<<endl; return 0; }
Output:
Enter a value :1 Enter b value :2 Result (a - b)^3 = :-1
#include <iostream> using namespace std; int main() { int a,b,result; cout<<"Enter a value :"; cin>>a; cout<<"Enter b value :"; cin>>b; result=a*a*a -b*b*b -3*a*b*(a -b); cout<<" Result (a - b)^3 = :"<<result<<endl; return 0; }
Output:
Enter a value :5 Enter b value :7 Result (a - b)^3 = :-8
/* C++ Program to calculate (a-b)3 using pow() function. */ #include <iostream> using namespace std; #include <math.h> int main() { int a,b,result; cout<<"Enter a value :"; cin>>a; cout<<"Enter b value :"; cin>>b; result=pow(a,3) - 3*pow(a,2)*b + 3*a*pow(b,2) - pow(b,3) ; cout<<" Result (a - b)^3 = :"<Output:
Enter a value :8 Enter b value :3 Result (a - b)^3 = :125/* C++ Program to calculate (a-b)3 using pow() function. */ #include <iostream> using namespace std; #include <math.h> int main() { int a,b,result; cout<<"Enter a value :"; cin>>a; cout<<"Enter b value :"; cin>>b; result=pow(a,3) -pow(b,3) -3*a*b*(a -b); cout<<" Result (a - b)^3 = :"<<result<<endl; return 0; }Output:
Enter a value :10 Enter b value :4 Result (a - b)^3 = :216