I dunno what to write my memo thing about ⁻³⁻
2 answers:
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Our usual number system is the decimal number system. As the name suggests, it uses base 10.
Using a certain base to express numbers means to write numbers as weighted sums of powers of the base. For example, in base 10 we write
So, the weights of the powers are what we call the digits of the number.
Note that our digits finish at 9 because it wouldn't make sense to have a digit to express 10: if we choose a weight of 10 (or more) for a certain power, we can simply scale it to the next one: for example, saying "ten hundreds" is the same as saying "one thousand":
Now, the hexadecimal number system simply uses 16 as base, instead of 10. This means that its digits are
1,2,3,4,5,6,7,8,9,A,B,C,D,E,F
where digits from A to F represent numbers from 10 to 15.
These are some examples of hexadecimal numbers turned into our usual system:
Answer:
#include <iostream>
#include <cmath>
using namespace std;
int main()
{
cout<<"Enter time in seconds:";
int time, hour, minutes, seconds,initialTime;
cin>>time;
initialTime = time;
hour = floor(time / 3600);
time = time % 3600;
minutes = floor(time / 60);
time = time % 60;
seconds = time;
cout<< initialTime<<" can be broken down into: "<<endl;
cout<<hour << " hour(s)"<<endl;
cout<<minutes <<" minutes"<<endl;
cout<<seconds <<" seconds"<<endl;
return 0;
}
Explanation:
The programming language use is c++
The module cmath was called to allow me perform some math operations like floor division, and the Iostream allows me to print output to the screen. Using namespace std allows me to use classes from the function std.
I prompt the user to enter time in second, then declare all the variables that will be used which include time, hour, minutes, seconds and initialTime.
initialTime is used to hold the the time input entered by the user and will be printed at the end no arithmetic operation is carried out on it.
Floor division (returns the quotient in a division operation) and Modulo (returns the remainder in a division operation) division is used to evaluate the hours, the minutes and the seconds.
The final answers are then printed to the screen.
I have uploaded the c++ file and a picture of the code in action
