printf("sine of %lf is %lf\n",x,s);中的sine of %lf is 初学看不懂!

printf("sine of %lf is %lf\n",x,s);中的sine of %lf is 初学看不懂!
printf("sine of %lf is %lf\n",x,s);中的sine of %lf is 初学看不懂!

printf("sine of %lf is %lf\n",x,s);中的sine of %lf is 初学看不懂!
第一个出现%lf的地方用 x的值取代
第二个出现%lf的地方用 s的值取代
%lf 表示是double类型的值
%d 是int型
%s 是字符串
%c 是字符
等等