加入了关于行数的奇偶检查，字符菱形

#include<stdio.h>
int main()
{
    int a,c,d,e,f,g,h,l,z;
    char b;
    printf(&quot;请输入您想要打印的字符：&quot;);
    b=getchar();
    printf(&quot;请输入您想要打印菱形的行数（必须为正奇数）：（输入q表示终止程序）&quot;);
    while(scanf(&quot;%d&quot;,&amp;z)==1)
        {
        if(z%2==0)
            {
                printf(&quot;请检查输入的是否为正奇数并重新输入：&quot;);
                continue;
            }
        else
            {
            for(a=1;a<=z/2+1;a++)
                {
                    for(c=1;c<=z/2+1-a;c++)
                    printf(&quot; &quot;);
                    for(d=1;d<=2*a-1;d++)
                    putchar(b);
                    printf(&quot;\n&quot;);
                }
            for(f=1;f<=z/2;f++)
                {
                    for(g=0;g>-f;g--)
                    printf(&quot; &quot;);
                    for(h=1;h<=z-2*f;h++)
                    putchar(b);
                    printf(&quot;\n&quot;);
                }
            }
        }
    return 0;
}