Notes

#include<stdio.h>
#include<string.h>
#include<stdlib.h>

struct data{
int id,sitnum;
char name[20];
float d[5],d25[5],points,gpa;
};

int sethours();
void printall(struct data[]);










main()
{
int *p1,h[5],i,j,k,l,m,n,sumhours,choose;
struct data std[10];
FILE *ff;

//Checking Data
if((ff=fopen("E:\txt.txt","r"))!=NULL)
{
//GO TO
}
//Hours
p1=sethours();
for(i=0;i<5;i++)
{
h[i]=*p1;
p1++;
}

//all hours

sumhours=*p1;

//Entering data
printf("Enter The data of 10 Students");
for(j=0;j<10;j++)
{
printf("For Student %dnEnter id : ",j+1);
scanf("%d",&std[j].id);
printf("nEnter Sitting number ");
scanf("%d",&std[j].sitnum);
printf("nEnter the name ");
//gets(std[j].name);
scanf("%s",std[j].name);
//Degrees
for(k=0;k<5;k++)
{
printf("nEnter the Degree no.%d ",k+1);
scanf("%f",&std[j].d[k]);
}
for(l=0;l<5;l++)
{
std[j].d25[l]=std[j].d[l]/25;
}
//points
std[j].points=0;
for(m=0;m<5;m++)
{
std[j].points=std[j].points+(std[j].d25[m]*h[m]);
}

//Gpa
std[j].gpa=std[j].points/sumhours;
}
//Wrinting Data
if((ff=fopen("E:\txt.txt","w"))==NULL)
{
printf("nError in Writing Data in File ");
exit(1);
}
// fprintf(ff,"IdtSitting NumbertName d1 d2 d3 d4 d5 Points GPAn")
for(n=0;n<10;n++)
{

fprintf(ff,"%dt%dt %st%.2f %.2f %.2f %.2f %.2f %.2f %.2fn",std[n].id,std[n].sitnum,std[n].name,std[n].d[0],std[n].d[1],std[n].d[2],std[n].d[3],std[n].d[4],std[n].points,std[n].gpa);

}



printf("n Data Entered successfullynWhat Do you want to do?nEnter 1 for Print all data of Students n>>");
scanf("%d",&choose);
switch(choose)
{
case 1 :
{
printall(std);
}
}


/*
//Printing data
printf("nThe details Of Student isn");
printf("IdtSitting NumbertName td1 d2 d3 d4 d5 Points GPAn");
for(n=0;n<10;n++)
{
printf("%dt%dt %st%f %f %f %f %f %.3f %.3fn",std[n].id,std[n].sitnum,std[n].name,std[n].d[0],std[n].d[1],std[n].d[2],std[n].d[3],std[n].d[4],std[n].points,std[n].gpa);
}
*/
}









int sethours()
{
int h[6],i,k,sum=0,*p=h;
printf("Enter Hours for :n");
for(i=0;i<5;i++)
{
printf("Subject %d ",i+1);
scanf("%d",&h[i]);
}
for(k=0;k<5;k++)
{
sum=sum+h[k];
}
h[5]=sum;
return p;
}

void printall(struct data std[])
{
int n;
//Printing all data
printf("nThe details Of all Student isn");
printf("IdtSitting NumbertName d1 d2 d3 d4 d5 Points GPAn");
for(n=0;n<10;n++)
{
printf("%dt %dt %st%.2f %.2f %.2f %.2f %.2f %.2f %.2fn",std[n].id,std[n].sitnum,std[n].name,std[n].d[0],std[n].d[1],std[n].d[2],std[n].d[3],std[n].d[4],std[n].points,std[n].gpa);
}
}