1、编写一程序,求一元二次方程ax^2+bx+c=0(a0)的解

#include "stdio.h"#include "math.h"void main(){float a,b,c;float delta;printf("input a:");scanf("%f",&a);printf("input b:");scanf("%f",&b);printf("input c:");scanf("%f",&c);if(a==0)printf("error a!");...