c/c++程序,模块化设计。自定义函数实现该程序的功能,要在主函数内实现...答:include<stdio.h> int fun1(int x,int y);int fun1( int x,int y){ int max;if(x>y)max=x;else max=y;return max;} void main(){ int max,a,b;printf("Please enter 2 numbers:(a,b)");scanf("%d %d",&a,&b);max = fun1(a,b);printf("max=%d\n",max);} ...