in c++, the rand function calculates a number based on the internal clock of the system, so if we were to simply cout<< rand(); we'd get the same numbers over and over again, thus, we'd have to set a random starting point first before we generate the numbers.
| c++: |
#include <iostream> #include <ctime> using namespace std; int main() { srand((unsigned)time(NULL)); cout<< rand(); return 0; } |
this will generate a random number from 0 to RAND_MAX. to get it between a range, all you need to do is mod the number for example, if we want a random number from 0 to 4, we'd have this
| c++: |
#include <iostream> #include <ctime> using namespace std; int main() { srand((unsigned)time(NULL)); cout<< rand() % 5; return 0; } |
since by modular math, any number mod 5 will be congruent to 0 1 2 3 or 4, so for a range from 0 to 10. simply mod the rand by 11
if u want a sepcific range from n to m to then find out how many numbers there are in the range by taking (rand() % (m-n+1))+n
| c++: |
//generate a random number between a specific range #include <iostream> #include <ctime> using namespace std; int main() { int m,n; cin>>m>>n; srand((unsigned)time(NULL)); cout<<(rand() % (m-n+1))+n; return 0; } |
hope this helps
. I got it to finally work (i had bran flakes this morning) so, sorry for the annoyance I caused you, but I thank you guys for puttin up with it 
)
