C + + star graphic--hollow triangle (star centered) (Core code introduction)

//output Another triangle of asterisks (the asterisk is aligned in the center)    intA//controls the number of rows that make up the asterisk of the trianglecout<<"Please enter the number of rows N (n>=2) of the asterisk to form the three-solution: \ N"; CIN>>A;  for(intI=1; i<a+1; i++)//control number of rows    {         for(intj=a-i;j>=0; j--) {cout<<"  ";//Here are two spaces        }         for(intk=0;k<2*i-1; k++)//control the number of each planetary number.         {            if(i==0|| i==a) {cout<<"* ";//a space is added to the asterisk (to make it more intuitive to print out a graphic).             }            Else            if(k==0|| k==2*i-2) {cout<<"* "; }                            Elsecout<<"  "; } cout<<Endl; }

C + + star graphic--hollow triangle (star centered) (Core code introduction)