QuadraticRoot

#include<stdio.h>
#include<math.h>
void main(int argc, char const *argv[]){
    float a,b,c,D;
    printf("input first coefficience :");
    scanf("%f",&a);
    printf("input second coefficience :");
    scanf("%f",&b);
    printf("input constant :");
    scanf("%f",&c);
    D=pow(b,2)-4*a*c;
    if(D<0){printf("has no real root");}
    else if (D==0){printf("identical root : %.3f",-b/2*a);}
    else{printf("distinct root :%.3f and %.3f",-b+sqrt(D)/2,-b-sqrt(D)/2);}

}