grade.c

grade.c

#include <stdio.h>

int main()
{
   float phy,chem,math,a;
   char c,g;
   
   printf("\nEnter choice \n\t1.If_Else\n\t2.Switch_case\n\t=>");
   scanf("%c",&c);
   
   printf("\nEnter markes obtained in phy,chem and maths resp. =>");
   scanf("%f %f %f",&phy,&chem,&math);
   
   a=(phy+chem+math)/3; 
   if(c=='1')
   {
     if(a>=85)
     {
       g='A';
     }
     else if((a<85)&&(a>=70))
     {
       g='B';
     }
     else if((a<70)&&(a>=50))
     {
       g='C';
     }
     else
     { 
       g='F(Fail!)';
     }
    }
   else
    {
      int x;
      x=a/10;
      switch (x)
      {
        case 8 ... 10: g='A';break;
        case 6 ... 7: g='B';break;
        case 4 ... 5: g='C';break;
        default: g='F';
      }
     }
    
    printf("\n\tGrade=%c\n",g);
   
    return 0;
}