写一个方法,求3个double类型变量的最大值,并返回(用C语言编程)答:include <stdio.h> double maxfun (double x, double y,double z){ double v;v = x;if (y>v) v= y;if (z>v) v=z;return v;} int main(){ double a,b,c;printf("input a b c\n");scanf("%lf %lf %lf",&a,&b,&c);printf("Maximum value is: %lf\n",maxfun(a,...