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Hollow Diamond pattern.cpp
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Hollow Diamond pattern.cpp
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#include <iostream>
using namespace std;
int main() {
int n, i, j, mid;
cout << "Enter number of lines: ";
cin >> n;
if(n %2 == 1) { //when n is odd, increase it by 1 to make it even
n++;
}
mid = (n/2);
for(i = 1; i<= mid; i++) {
for(j = 1; j<=(mid-i); j++) { //print the blank spaces before star
cout << " ";
}
if(i == 1) {
cout << "*";
}else{
cout << "*"; //in each line star at start and end position
for(j = 1; j<=2*i-3; j++) { //print space to make hollow
cout << " ";
}
cout << "*";
}
cout << endl;
}
for(i = mid+1; i<n; i++) {
for(j = 1; j<=i-mid; j++) { //print the blank spaces before star
cout << " ";
}
if(i == n-1) {
cout << "*";
}else{
cout << "*"; //in each line star at start and end position
for(j = 1; j<=2*(n - i)-3; j++) { //print space to make hollow
cout << " ";
}
cout << "*";
}
cout << endl;
}
}