Thread: error in array

i'm trying to create a function that reads specific value in array, there's no error in compiling but the output is not like the expected output, it keeps showing some random numbers

Code:

#include <stdio.h>
#include <limits.h>


int maxi, mini, subject;
int A[0];
int B[0];
int C[0];
int D[0];
int E[0];
int score[60];


void scoregrade(int score[60]);
void average(float, float);
float countgpa, gpa;
void maximini(int score[60]);
void printset(void);


int main()
{
        int maxi = INT_MIN;
        int mini = INT_MAX;
            for(subject=0; subject <=5; subject++){
                printf("Please Enter The Score per Subject: ", (subject+1));
                                scanf("%d", &score[subject]);                                }                                                                                                       scoregrade(score);
               // maximini(score);
                printset();
                average(countgpa, gpa);
}


void maximini(int score[60])
{
        for(subject=0; subject <=5; subject++){
        if (score[subject] >= maxi){maxi = score[subject];}
        else if (score[subject] <= mini){mini = score[subject];}
        printf("Max = %d\n", maxi);
        printf("Min = %d\n", mini);}
}


void printset(void)
{
    printf("A = %d\n", A);
    printf("B = %d\n", B);
    printf("C = %d\n", C);
    printf("D = %d\n", D);
    printf("E = %d\n", E);
}


void scoregrade(int score[60])
{
    for(subject = 0; subject <= 5; subject++){
        if (score[subject] >= 85)
            {A[0]++; printf("Your score is:%d => grade A\n", score[subject]);}
                else if (score[subject] >= 70)
                    {B[0]++; printf("Your score is:%d => grade B\n", score[subject]);}
                        else if (score[subject] >= 60)
                            {C[0]++; printf("Your score is:%d => grade C\n", score[subject]);}
                                else if (score[subject] >= 55)
                                    {D[0]++; printf("Your score is:%d => grade D\n", score[subject]);}
                                        else {E[0]++; printf("Your score is:%d => grade E\n", score[subject]);}
    }
}


void average(float countgpa, float gpa)
{
//    for (subject = 0; subject <= 5; subject++){
    countgpa=(4*A[0])+(3*B[0])+(2*C[0])+(1*D[0])+(0*E[0]);
    gpa=countgpa/6;
    printf("GPA Semester 1: %.2f\n", gpa);
}

sorry for asking such a noob question, thank you