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#include<iostream>
void arbre ( int base) {
if (base%2==1) {
int espaces = (base-1)/2;
int nb=1;
int etage = base / 2 +1;
for ( int i=1; i<=etage; i ++) {
for ( int j=1; j<=espaces; j ++) {
std::cout<<" ";
}
for (int k=1; k<=nb; k ++) {
std::cout<<"*";
}
std::cout<<std::endl;
espaces--;
nb += 2;
}
}
}
int main () {
int n=0;
std::cout << " Entrez le nombre d'etoiles voulues a la base"<<std::endl;
std::cin>>n;
arbre(n);
return 0;
}
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