. Write a program to input coefficient a, b, c, o a yuan quadratic equation ax2 + bx + c=0, including the main functions and the child, the child function to realize the following functions: (, a, b, c as parameters passed in)
(1) determine whether a is zero,
(2) calculate the discriminant,
(3) calculate root,
(4) the output root,

CodePudding user response:

Can be used for root company

CodePudding user response:

 # include 
#include 
using namespace std; 

//return the number of solutions 
Int solve (double a, b double, double c) {
//determine whether a 0 
If (a==0) {
Cout<& lt;" Solution: "& lt; <- c/breturn 1; 
} 
The else {
Int Jugement=SQRT (* a * b * b - 4 c); 
If (Jugement> 0 {
Cout<& lt;" Solution: "& lt; <(Jugement - b)/(2 * a) & lt; & lt;" And "& lt; <(Jugement - b)/(2 * a) & lt; Return 2; 
} 
Else if (Jugement==0) {
Cout<& lt;" Solution: "& lt; <(Jugement - b)/(2 * a) & lt; return 1; 
} 
The else {
return 0; 
} 
} 
} 

Int main () {
Double a, b, c; 
Cout<& lt;" Please enter a, b, c value: "; 
cin> A> B> c; 
Int result=solve (a, b, c); 
Cout<& lt;" Equation has "& lt; return 0; 
}