用c程序解一元二次方程 /* Note:Your choice is C IDE */#include "stdio.h"void main(){double a,b,c;double s,d,x1,x2;printf("ax2+bx+c=0\n a= b= c=\n");scanf("%f %f %f",&a,&b,&c);d=b*b-4.0*a*c;if(d>0){x1=(-b+sqrt(d))/2.0/a; x2=(-b-sqrt(d))/2.0/a

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