Write a C Program to input student marks of five subjects and calculate percentage. And define grade as per following condition

Per >= 80 then A+ Grade
Per < 80 and >= 70 then A Grade
Per <70 and >= 60 then B Grade
Per <60 and >= 50 then C Grade
Else Fail

#include<stdio.h> 

 1.Per >= 80 then A+ Grade
 2.Per < 80 and >= 70 then A Grade
 3.Per < 70 and >= 60 then B Grade
 4.Per < 60 and >= 50 then C Grade
 5.Else Fail

*/


void main()
{
  int per,n1,n2,n3,n4,n5;

printf("Enter marks of five subjects:");
scanf("%d%d%d%d%d",&n1,&n2,&n3,&n4,&n5);

  per=(n1+n2+n3+n4+n5)/5;

printf("Result is :%d",per);

  if(per<=50) { printf(" Fail"); } else if(per>=50 && per<=60) { printf(" C Grade"); } else if(per>=60 && per<=70) { printf(" B Grade"); } else if(per>=70 && per<=80) { printf(" A Grade"); } else if(per>=80)
  {
printf(" A+ Grade");
  }

getch();

}