c语言求一元二次方程的根答:Ax2+bx+c=0 求一元二次方程:ax2+bx+c=0 的根;输入三个实数a,b,c的值,且a不等于0。#include <stdio.h>#include <math.h>int main(){;float a,b,c,x1,x2,d;printf("输入方程的三个系数:");scanf("%f %f %f",&a,&b,&c);if(a!=0);{;d=sqrt(b*b-4*a*c);x1...
c语言编程输入abc输出一元二次方程ax^2+bx+c的根,,求大神编程,,if语句...答:r1, r2; scanf("%f%f%f", &a, &b, &c); d = b * b - 4 * a * c; if (d > 0) { r1 = (-b + sqrt(d)) / (2 * a); r2 = (-b - sqrt(d)) / (2 * a); printf("解:%f, %f\n", r1,
C语言程序求方程ax^2+bx+c=0的根,用3个函数分别求当b^2-4ac大于0,等于...答:b-d)/a);}void _f(double a,double b,double d){d=sqrt(-d),a=-b/a/2,b=d/a/2; printf("x1 = %f%+fi\nx2 = %f%+fi\n",a,b,a,-b);}void f0(double a,double b){printf("x1=x2 = %f\n",-b/a/2);}int main(int argv,char *argc[]){double a,b,c,d;...
用c语言编写:求方程ax2+bx+c=0的实数根。a,b,c由键盘输入,a≠0且b2...答:f2(a,b,c);else f3(a,b,c);} } void f1(float a1,float a2,float a3){ x1 = x2 = -a2/(2*a1);printf("x1 = x2 = %f\n",x1);} void f2(float b1,float b2,float b3){ float disc;disc = sqrt(b2*b2-4*b1*b3);x1 = (-b2 + disc)/(2*b1);x2 = (-b2 - ...