little prob

[MAhmed]

every thing is working fine but below on if else statements. when i compile it shows error that "else" is miss placed tell me what mistake i did??

#include<stdio.h>
#include<conio.h>
int main()
{
  textcolor(RED);
  textbackground(WHITE);
clrscr(); {
printf("Here You Can Check Results \n kindly write marks bellow \n");          }
int math,phy,chem,total;  float re;
{
printf("\n Maths Marks:"); scanf("%d", &math);
 }{
printf("\n Physics Marks: "); scanf("%d", &phy);
   } {
printf("\n Chemistry Marks:"); scanf("%d", &chem);
      }{
printf("\n Total:");  }
{ printf("%d",total= math+phy+chem);    }
	 {
printf("\n Percentage:"); } re=(total*100)/400;
{printf("%f",re);    } { printf("%"); }
 if(re>90)
{printf("A-1 Grade");

else if(re>70 && re<90)
{printf("A Grade"); }

else if(re>50 && re<70)
{ printf("B Grade"); }
else if(re>33 && re<50)
{ printf("Pass"); }

 else           {
printf("Fail");  }

[AbstractionAnon]

Line 23: You have a { with no closing } Your else clause is following printf. Not valid.

Why so many {} in your program? You don't need to put {} around every statement.