bit stuck help!!!

i am beginner to programming and want help,
i was making the program to find the roots of quadratic equation AX2+BX+C using functions
help me out please.

roots of the quadratic equation can be calculated using the formula

x=(-b+sqrt(bb-4ac))/2a and x=(-b-sqrt(bb-4aC))/2a

the formula to find roots of quadratic equation is

x=(-B+(B^2-4AC)^1/2)/2*A or x=(-B-(B^2-4AC)^1/2)/2*A

and a C program to get roots of quadratic equation where inputs are A,B,C respectively is given below


int main(){
  float a,b,c;
  float d,root1,root2;  
  printf("Enter a, b and c of quadratic equation: ");

scanf("%f%f%f", &a, &b, &c);
  d = b * b - 4 * a * c;
  if(d < 0){
    printf("Roots are complex number.\n");      
    return 0; 
  else if(d==0){
   printf("Both roots are equal.\n");
   root1 = -b /(2* a);

printf("Root of quadratic equation is: %.3f ",root1);
   return 0;
   printf("Roots are real numbers.\n");
   root1 = ( -b + sqrt(d)) / (2* a);
   root2 = ( -b - sqrt(d)) / (2* a);
   printf("Roots of quadratic equation are: %.3f , %.3f",root1,root2);


return 0;