tessellation triangle
#include<iostream>
int main(){
std::cout<<"Please enter the number of rows:\t";
int rows;
std::cin>>rows;
std::cout<<"Please enter the number of columns:\t";
int columns;
std::cin>>columns;
unsigned int n=3;
unsigned int k=4;
unsigned int n_reserve{0};
unsigned int k_reserve{0};
unsigned int which_row=1;
if(columns>1){
n=(columns)*6-n;
k=((columns)*6)-(k)+2;
n_reserve=n;
k_reserve=k;
}
for(int odd{1};odd<=(rows*3);++odd){
for(int j{columns*6};j>=1;--j){
if(j==n){
std::cout<<"\\"; // ==> "/"
if(n>3&&columns>1){n-=6;}
}else if(j==k){
std::cout<<"/";// ==> "\"
if(k>4&&columns>1){k-=6;}
}else if(odd%3==0){
std::cout<<'_';
}else{
std::cout<<" ";
}
}std::cout<<std::endl;
if(columns>1){
n=--n_reserve;
k=++k_reserve;
++n;--k;
}
--n;
++k;
if(odd%3==0){++which_row;}
if(which_row%2==0&&odd%3==0)
{// 29421 796842 */ ;)
n_reserve=(columns)*6;
k_reserve=((columns)*6)-5;
n=n_reserve;
k=k_reserve;
}
}
return 0;
}