printf%f,带有4位小数,最后带有符号"%"

Question

我有一个矢量:

p[0]=0.40816269
p[1]=0.37576407
p[2]=0.16324950
p[3]=0.05282373

我需要以4位小数的形式打印矢量值作为百分比.我试过了:

for(int i=0; i<p.length;i++)
{
    System.out.printf("Criterion "+i+" has the weigth=%.4f \n" , p[i]*100);
}

这给了我:

Criterion 0 has the weigth=40.8163, .....

但我想打印:

Criterion 0 has the weigth=40.8163 %, .....

我不能在每行的末尾添加符号"%".如果我尝试:

System.out.printf("Criterion "+i+" has the weigth=%.4f %\n" , p[i]*100);

要么:

System.out.printf("Criterion "+i+" has the weigth=%.4f "+"%\n" , p[i]*100);

程序引发异常.先感谢您!

Answer 1

你需要的逃犯%用%%:

System.out.printf("Criterion "+i+" has the weigth=%.4f %%\n" , p[i]*100);