输出星号图

<img src="http://img.blog.csdn.net/20141108083502878?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvSV9fQW1fX0xlZ2VuZA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />#include <iostream>using namespace std;int main(){    int i,j;    i=1;    while(i<=6)    {        for (j=1;j<=2*i-1;++j)            cout<<"*";            cout<<endl;            ++i;    }        cout<<endl;    return 0;}