已知1亩=0.1647369英亩(acre)，编写程序输出下列形式的转换表。英亩保留小数位5位。

mao是啥意思？亩？双重循环啊

#include <stdio.h>
int main()
{
    int i,j;
    printf("%-5s%-10s%-5s%-10s%-5s%-10s\n","mao","yinmao","mao","yinmao","mao","yinmao");
    for(i=1;i<=30;i++)
    {
        for(j=1;j<=3;j++)
        {
            printf("%-5d%-10.5f",i+30*(j-1),(i+30*(j-1))*0.1647369);
        }
        printf("\n");
    }

    return 0;
}