1-3-10: Calculate the resistance of the shunt resistor

Describe

For resistors with resistance of R1 and R2, the parallel resistor resistance formula is calculated as follows:

R = 1/(1/R1 + 1/r2)

Input two resistor impedance size, floating point, separated by a space. The impedance after the output is in parallel, the result is 2-bit sample input after the decimal point is retained

1 2

Sample output

0.67

Hint that the calculation process uses the float type

1#include <stdio.h>2#include <math.h>3 intMain ()4 {5     floatr,r1,r2;6scanf"%f%f",&r1,&r2);7R=1/(1/r1+1/r2);8printf"%.2f\n", R);9     return 0;Ten}

1-3-10: Calculate the resistance of the shunt resistor