Trying to study for exam, need help on two questions.

I have my final exam for intro to programming in c this sunday and upon studying found two questions that confuse me. I would appreciate if someone could help me solve them, I think my answers are wrong.

Write a function called getGrades. The function that repeatedly prompts the user for positive integers until the user enters a negative value to stop. The function should return the average of these grades, the highest grade and the lowest grade.

Code:

---

double getGrades()
{
double average;
double i;

printf("Enter Grade");
scanf("%lf", &i);
}

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Write a function called Get_Info that takes a pointer to a student structure, (That has three fields: char array called name, and int id, and a double gpa) as its only argument. The function prompts the user for the required information to fill the structure and stores it in the appropriate fields.

Code:

---

typedef struct{
        int id;
        double gpa;
        char name[SIZE];
}student;


 void Get_Info(student list[], int num)
 {
        int i;
        for(i=0;i<num;i++)
        {
                printf("\nName:%s", list[i].name);
                printf("\nGPA:%lf", list[i].gpa);
                printf("\nID: %d\n", list[i].id);
        }
 }

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Quote:

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Originally Posted by Rawr

I have my final exam for intro to programming in c this sunday and upon studying found two questions that confuse me. I would appreciate if someone could help me solve them, I think my answers are wrong.

Write a function called getGrades. The function that repeatedly prompts the user for positive integers until the user enters a negative value to stop. The function should return the average of these grades, the highest grade and the lowest grade.

Code:

---

double getGrades()
{
double average;
double i;

printf("Enter Grade");
scanf("%lf", &i);
}

---

Write a function called Get_Info that takes a pointer to a student structure, (That has three fields: char array called name, and int id, and a double gpa) as its only argument. The function prompts the user for the required information to fill the structure and stores it in the appropriate fields.

Code:

---

typedef struct{
        int id;
        double gpa;
        char name[SIZE];
}student;


 void Get_Info(student list[], int num)
 {
        int i;
        for(i=0;i<num;i++)
        {
                printf("\nName:%s", list[i].name);
                printf("\nGPA:%lf", list[i].gpa);
                printf("\nID: %d\n", list[i].id);
        }
 }

---

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Regarding question 1) You are reading a double value for a grade when the questions actually asks for a positive integer.

You are reading a single grade rather than looping until the grade you are reading is negative.

question 2) You are passing an array and an int to a function that is required to only take a pointer.