c语言求方程ax方+bx+c=0的根,用3个函数分别求当b方-4ac大于0,等于0...答:float x1,x2,disc,p,q;void main(){void greater_than_zero(float,float);void equal_to_zero(float,float);void smaller_than_zero(float,float);float a,b,c;printf("input a,b,c:");scanf("%f,%f,%f",&a,&b,&c);printf("equation: %5.2f*x*x+%5.2f*x+%5.2f=0\n",a...
...输入一元二次方程的系数a,b,c,计算方程的根,要考虑虚根的情况,求...答:对于ax^2+bx+c=0 int panduan(int a,int b,int c){ int m;m=b*b-4*a*c;return(m);} void main(){int a,b,c,flag,x1,x2,ture,virture;printf("请依次输入二次方程的系数:\n”);scanf("%d %d %d",&a,&b,&c);flag=panduan(a,b,c);if(flag>0){x1=(-b+sqr(flag)...
程序设计,已知:a=2.1,b=9.8,c=4.3,编程求方程ax2+bx+c=0的根。答:include <stdio.h>#include <math.h>void main(){double a=2.1, b=9.8, c=4.3;double disc, p, q, x1, x2;disc = sqrt(b*b-4*a*c);p = -b/(2*a);q = disc/(2*a);x1 = p+q;x2 = p-q;printf("x1 = %lf, x2 = %lf\n", x1, x2);}满意请采纳~...
用C语言编写,求算术平方根ax²+bx+c+0的根。分别考虑有两个不等的...答:void main(){ double a,b,c,d,x1,x2,realpart,imagpart;printf("请输入a,b,c的值:\n");scanf("%lf,%lf,%lf",&a,&b,&c);printf("方程的根:\n");if(a==0){ printf("这不是一个一元二次方程。\n");return;} else d=b*b-4*a*c;if(fabs(d)<=1e-6)/ fabs是求...