1537-栅格打印问题（思路清晰）

解题思路:

/*

1)记得判断高度、宽度都大于0

2)总行数=2*高度+1，总列数=2*宽度+1

  奇数行：奇数列'+'、偶数列'-'

  偶数行：奇数列'|'、偶数列' ' 

*/

注意事项:

参考代码:

#include<iostream>

using namespace std;

int main()

{

        int h,w;

        cin >>h >>w;

        int r=2*h+1,c=2*w+1;

        if(h>0 && w>0)

        {

                for(int i=1;i<=r;i++)

                {

                    for(int j=1;j<=c;j++)

                    {

                        if(i%2!=0)

                        {

                            if(j%2!=0)

                                  putchar('+');

                            else

                                  putchar('-');

                        }

                       else

                       {

                            if(j%2!=0)

                                  putchar('|');

                            else

                                  putchar(' ');

                       }

                   }

                   putchar('\n');  //记住不要丢掉哦 

               }

        }

        return 0;

}