c++求解一元二次方程(考虑各种情况)(共1页).docx

精选优质文档-倾情为你奉上#include #include void main() double a,b,c,d,e,x1,x2; cinabc;d=b*b-4*a*c;if(a=0&b=0&c=0)cout有无穷多个根;else if(a=0&b=0&c!=0) coutno root;else if(a=0&b!=0)x1=-c/b;coutx1=x2=x1;else if(d0) x1=-b/(2*a);x2=sqrt(-d)/(2*a);coutx1+fabs(x2)iendl;coutx1-fabs(x2)iendl;else if(d=0)x1=(-b)/(2*a); x2=(-b)/(2*a);cou