Need Help C++

[ohJey]

I'm trying to make the program simulate dice rolls... the dice add up until 100.  If the dice "rolls" and the number is over 100, the roll is subtracted until 100 is landed upon.  Ex: 98+4=102, then 102-4=98, then it keeps "rolling" and subtracting until 100 is landed on

 

#include <iostream>
#include <ctime>
#include <cstdlib>
#include <vector>

using namespace std;

int main()
{
    srand(time(0));
    int number, tries{0}; ///the number that the dice lands on
    vector<unsigned int> lands(5);
    for(int i=0; i<=100; ++i)
    {
        if(i<100)
        {
            number = rand()%6;
            i=number+i;
            cout << "i: " << i << endl;
            ++lands[number];
        }
        if(i>100)
        {
            i=i-lands.back(); ///need help here
            cout << "lands.back(): " << lands.back() << endl; ///debugging
            cout << "i: " << i << endl;
        }
        else if(i==100)
        {
            cout << "i: " << i << endl;
            cout << "Done!" << endl;
        }
    }
    tries = lands[0]+lands[1]+lands[2]+lands[3]+lands[4]+lands[5];
    cout << "Tries: " << tries;
    cout << "\nAfter " << tries << " throws the lands are: "
         << "\n#1= " << lands[0]
         << "\n#2= " << lands[1]
         << "\n#3= " << lands[2]
         << "\n#4= " << lands[3]
         << "\n#5= " << lands[4]
         << "\n#6= " << lands[5];
}

 

 

 

[Enderman]

I dont know what youre trying to do with lands.back(), ive never used that

but i know there is a much easier way to solve this

 

just use a while loop, with the condition that i!=100

then just loop, if i<100 then add, if i>100 then subtract

then you get to i=100 the loop will break and you can have the print statement at the end

[ohJey]

7 minutes ago, Enderman said:

I dont know what youre trying to do with lands.back(), ive never used that

but i know there is a much easier way to solve this

 

just use a while loop, with the condition that i!=100

then just loop, if i<100 then add, if i>100 then subtract

then you get to i=100 the loop will break and you can have the print statement at the end

the problem is I'm trying to subtract the last dice roll and I can't figure out how to do it

the lands.back() was me trying to get the last number in the vector... but it gives me random numbers

[Enderman]

6 minutes ago, ohJey said:

the problem is I'm trying to subtract the last dice roll and I can't figure out how to do it

the lands.back() was me trying to get the last number in the vector... but it gives me random numbers

why cant you do 

number = rand()%6;
            i=i-number;

 

like you did in the first if statement?

[ohJey]

3 minutes ago, Enderman said:

why cant you do 

number = rand()%6;
            i=i-number;

 

like you did in the first if statement?

wow... I did 

i = i-number-1 and it worked