德尔塔|求根公式

/* run this program using the console pauser or add your own getch, system(“pause”) or input loop */

int main(int argc, char *argv[]) {
float a,b,c,x1,x2,m;
printf(“请分别输入abc，用空格隔开”);
scanf(“%f %f %f”,a,b,c);
m=b*b-4*a*c;
x1=(-b+ sqrt(m))/(2*a);
x2=(-b- sqrt(m))/(2*a);
printf(“\n%f \n%f”,x1,x2);
return 0;
}