Calculate GPA In C

#include<iostream>
#include<stdio.h>
#include<conio.h>
using namespace std;
main()
{
char y;
do
{
int n,z,a,b,c,d,e,f,sum;
float ave,gpa;
char name[100],NAME[100];
printf("\nEnter department name: ");
gets(NAME);
printf(" \nPlease....\nenter 1 for first\nenter 2 for second\nenter 3 for third\nenter 4 for forth\nenter 5 for fifth\nenter 6 for sixth\nenter 7 for seventh\nenter 8 for eigth\nenter 9 for nineth\nenter 10 for tenth student: ");
scanf("%d",&n);

switch(n)

{

case 1:

printf("\nenter the student name: ");

gets(name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 2:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 3:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 4:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 5:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 6:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 7:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 8:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 9:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

case 10:

printf("\nenter the student name: ");

scanf("%s",&name);

printf("\n\tRoll no: ");

scanf("%d",&z);

printf("\nEnter first subject marks out of 100:: ");

scanf("%d",&a);

printf("\nEnter second subject marks out of 100:: ");

scanf("%d",&b);

printf("\nEnter 3rd subject marks out of100:: ");

scanf("%d",&c);

printf("\n#nter 4th subject marks out of 100:: ");

scanf("%d",&d);

printf("\nEnter 5th subject marks out of 100:: ");

scanf("%d",&e);

printf("\nEnter last subject marks out of 100:: ");

scanf("%d",&f);

sum=a+b+c+d+e+f;

printf("\n sum=%d",sum);

ave=(sum*100)/600;

printf("\n ave=%f",ave);

gpa=(ave/16)-1;

printf("\n your gpa=%f",gpa);

break;

default:

printf("\n\twrong.........!");

printf("do u want to continue: ");

scanf("%c",&y);
}
while(getche()!='y');
getch();
}
}