Code

#include <iostream>
#include <cstdio>
#include <string>

using namespace std;

int main(){
    int size = 20; //Change this
    char s = '*'; //Change this
    int e = 2;

    for (int i = 0; i < size; i++){
        if ((i + 1) % 2 == 1){ //If "i" is odd
            //Prints blank spaces
            printf("%*c", size - i - e, ' ');
            for (int h = 0; h < i + 1; h++){
                //Prints stars to form the pyramid
                printf("%c", s);
            }
            cout << endl;
            e--;
        }
    }

    system("PAUSE");
    return 0;
}