Integer and decimal

Hello, I have a little problem with "float" and "double". The problem is that in "resultado", always appears a integral number, also when the division or the root result is decimal. I have tried to use float and double, and the result is the same. I don´t know why is happening that, in theory, "float" and "double" work with decimals.

Code:

int main(int argc, char* argv[]) 
{ 
int a,b,c; 
double raiz, resultado; 
//[..] 

if(c==0 & b!=0 & a!=0){ 
printf("x=0"); 
resultado = ((-b)/a); 
printf("x=%d", resultado); 
} 

if (b==0 & a!=0){ 
raiz = ((-c)/a); 
if (raiz<0){ 
printf("Sin solucion (raiz negativa)"); 
} 
else{ 
resultado=sqrt(raiz); 
printf("El resultado es: %d", resultado); 
} 
}

Thanks,

printf("El resultado es: %f", resultado);

a, b and c are all integers, so when you do math when them you get integer math. Either cast them to float/double when doing your math or just change the datatype to float/double.

Yes, the problem was that a, b, c had to be float or double. Thanks !!