菱形改良，且代码行数减少

#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）：&quot;);
    scanf(&quot;%d&quot;,&amp;z);
        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=z/2;g>z/2-f;g--)
                printf(&quot; &quot;);
                for(h=1;h<=z-2*f;h++)
                putchar(b);
                printf(&quot;\n&quot;);
            }

    return 0;
}