C语言 谁能用函数调用的方式实现矩形周长和面积的计算.
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#include "stdio.h"
double mianji(double x,double y)
{ return x*y;
}double zouchang(double x,double y)
{ return 2*(x+y);
}int main()
{ double x,y;
printf("请输入矩形长和宽:");
scanf("%lf%lf",&x,&y);
printf("矩形面积:%lf\n",mianji(x,y));
printf("矩形周长:%lf\n",zouchang(x,y));
}