Question

c语言——一元二次函数因式分解

帮忙寻找错误，在Linux下输出两根后，系统无反应。

Answer 1

#include#includevoidm(floata,floatb,floatc){doublex1,x2;x1=(-b+sqrt(b*b-4*a*c))/(2*a);x2=(-b-sqrt(b*b-4*a*c))/(2*a);printf("方程的根是%.2lf和%.2lf",x1,x2);}voidn(floata,floatb,floatc){doublex;x=(-b)/(2*a);printf("方程的根为%.2lf",x);}voidf(floata,floatb,floatc){printf("方程无实数根\n");}main(){floata,b,c;printf("请输入a,b,c的值\n");scanf("%f%f%f",&a,&b,&c);if(b*b-4*a*c>0)m(a,b,c);if(b*b-4*a*c==0)n(a,b,c);if(b*b-4*a*c<0)f(a,b,c);}