PARTIALLY FILLED ARRAYS

by the way, just to give you an idea, this the problem description: write a program that computes grades for a class of 10 and 50 students. Program reads in a score in range 0-100 for each student from a "data file" and then outputs grades,identifying each student by number. Grades are determined: any student with 10 points below averate>F any student with score above and at most 10 gets a C and any student who gets abovew that, gets an A. There are no D's or B's. Input file contains scores like this:

85.7
56.7
etc.

Thats it guys, Im not asking you to solve me this problem but I need as much hints as possible. I apologize but I have big problems with this.

Thanks fellows,

Freebuddy

Post the code that you have so far.

ok guys, here's a rough code of what I got, I'm having problems on the FILE open part, Im not sure and also on how to compare the arrays so that each score for each X student... the following code has lots of mistakes, but is not that I dont know, is just roughly what Im thinking so please do not tell me that things like this { are missing or something, this is just what I think, but I just dont know how to put it in order or if my variables are ok, please check it. My problems: file open and compare.

#include<stdio.h>
#define ID 50
#define GRADE 40
#define EOF -1
void get_data(double scores[],int *count);
double average(double avg);
void compare(double scores[],int student[]);

int
main(void)
{
  double points[];
  int  *count ;
  int student[ID] ;
 char letter[GRADE];

average(avg);

printf(“ The average is %lf\n”,&avg);

return(0);

}

void get_data(double scores[],int *count)
{
 FILE *inp;
 int i ;
int *count ;
int stats ;
double points[] ;

inp= fopen(“points.dat”,”r”);
printf(“points\n”);

stats=fscanf(inp,”%lf”,&points);
while(stats!=EOF){
printf(“%lf”, points)



double average(double avg)
{
int i;

for(i=10;i<ID;i++)

avg=(scores[]+scores[])/scores[]

return(avg);
}

ok guys, here is the latest code I got:

Include<stdio.h>
#define STUD 40
#define SENTINEL 99
#define GRADES 40
void get_data(double scores[], int *counts);
double average(double const scores[],int count);
void compare(double scores[],double avg, int count);

int
main(void)
{
 int num[STUD];
 char grad[GRADES];
double scor[];
int count;

average(scor[],count);
printf(“The average is %lf\n”,average(scor,count));

return(0);
}

void get_data(double scores[],int *count)
{
 double nums;
 int c=0;

FILE *inp,*outp;
int stats;
inp=fopen(“scoring.dat”,”r”);
outp=fopen(“scoring.out”,”w”);

fprintf(outp,”scoring\n”);
fprintf(outp,”---------\n”);

stats=fscanf(inp,”%lf”,&nums);
while(stats==1 && c!=SENTINEL){
scores[c]=nums;
c++;
status=fscanf(inp,”%lf”,&nums);
}*count=c
}

void compare(double scores[],double avg, int count)
{
 int i;

 for(i=0;i<count;i++){
if(scores[i]<avg-10){
printf(“F”);
}
else if(scores[i]>avg){
printf(“C”);
{
else{
printf(A);
}
}
}

double average(double scores[],int count)
{
 int i;
double sum=0.0;
for(i=0;i<count;i++)
sum+=scores[];

return(sum/count);

}


I need help as soon as possible please, I'm confused about how to parallel all so my output looks like this:

student        Score         Grade
    1              56.8            F
    2              90.6            A
    3...           87.6...         A

how? I'd appreciate that. Also I think my "compare function " is wrong, but I im not sure, in the compare function im supposed to compare each score with the average to see if the student gets F, A or C.

Please I need this soon.

Thank you guys,

Good night.

What is the condition to be A, F, C?

fellows, I got this code, and im only having one error called "segmentation fault(core dumped)". I think is because I havent found how to arrange in a parallel ways the arrays, im confused in which part of the problem should I used a for-loop to arrange num[STUD] and grad[GRADES]. I don't know how to proceed oh relating them with the scores in the get data function. PLEASE HELP

   
#include<stdio.h>
#define STUD 40
#define SENTINEL 99
#define GRADES 40
void get_data(double scores[], int *count);
double average(double const scores[],int count);
void compare(double scores[],double avg, int count);

int
main(void)
{
 int num[STUD];
 char grad[GRADES];
 double scor[100];
 int count;
 double avg;
 int i;

get_data(scor,&count);
avg=average(scor,count);
printf("The average is %lf\n",avg);


return(0);
}

void get_data(double scores[],int *count)
{
 double scor;
 int c=0;

FILE *inp,*outp;
int stats;
inp=fopen("scoring.dat","r");
outp=fopen("scoring.out","w");

fprintf(outp,"scoring\n");
fprintf(outp,"---------\n");

stats=fscanf(inp,"%lf",&scor);
while(stats==1 && c!=SENTINEL){
scores[c]=scor;
c++;
stats=fscanf(inp,"%lf",&scor);
}*count=c;
}

void compare(double scores[],double avg, int count)
{
 int i;

 for(i=0;i<count;i++){
if(scores[i]<avg-10){
printf("F");
}
else if(scores[i]>avg-10){
printf("C");
}
else{
printf("A");
}
}
}

double average(double const scores[],int count)
{
 int i;
double sum=0.0;
for(i=0;i<count;i++)
sum+=scores[i];

return(sum/count);

}