Question

Hello,

I need some help with a program in C++, the thing is that i need to subtract 7 from a Number(R) given until that number is between 0 and 6.

Example

R=20

20-7=13

13-7=6 then stop here

R=30

30-7=23

23-7=16

16-7=9

9-7=2 then stop here.

Answer 1

//PROGRAM with comments STARTS HERE

#include<iostream>

using namespace std;

#define SUB 7

int main(){

int R; //variable R to store input number

cout << "Enter R : "; //Prompt user to Enter R

cin >> R; // storing input to R

bool stop = false; // variable to control while loop

cout << endl << "R=" << R << endl; // output value of R

int rem = R; //variable to store remaining value after substraction (initialize it with value of R)

while(!stop){ // start of while loop (runs till stop is true)

if(rem >= 0 && rem <= 6){ //cheking if rem is between 0 and 6

stop = true; //if above condition is true, set stop to false

continue; // and skip the rest of the loop statements (printing to console)

}

cout << rem << "-" << SUB << "=" << rem - SUB << endl; //this line prints to the console

rem = rem - SUB; //update remaining value by subtracting 7

}

}

//PROGRAM ENDS HERE

//SCREENSHOTS:

1. PROGRAM

2. PROGRAM with Output

3. Compilation and executions (and output) :