如何簡單理解用C語言調用三個函數求a*x^2+b*x+c=0，分別求b^2-4*a*的各個情況的根

#include<stdio.h> #include<math.h>//調用數學庫 double x1,x2;//全局變量x1,x2 int main() { void m1(double a,double b,double c); void m2(double a,double b,double c); void m3(double a,double b,double c); double a,

>>阅读原文<<