c语言练习题

从键盘输入两个电阻值，求他们的并联和串联电阻值，结果保留两位小数。

#include <stdio.h>

void main()

{

float r1,r2,fbinglian,fchuanlian;

scanf("%f%f",&r1,&r2);

fbinglian=(r1+r2)/(r1*r2);

printf("并联的电阻值为%.2f",fbinglian);

fchuanlian=r1+r2;

printf("串联的电阻值为%.2f",fchuanlian);

}