C Programs to calculate discount on items on the basis of amount of the item using if-else ladder

#include
#include
void main()
{
float amt,dis;
printf("enter amount of an item");
scanf("%f",&amt);
if(amt>=10000)
{
printf("discount is 30%");
dis=(amt*30.0)/100;
}
else if ((amt>=7000)&&(amt<10000))
{
printf("discount is 20%");
dis=(20.0*amt)/100;
}
else if((amt>=5000)&&(amt<7000))
[
printf("discount is 15%");
dis=(amt*15.0)/100;
}
else if((amt>=2000)&&(amt<5000))
{
printf("discount is 10%");
dis=(amt*10.0)/100;
}
else
{
printf("discount is 5%");
dis=(amt*5.0)/100;
}
printf("discount=%f",dis);
}