C 프로그래밍

#include <stdio.h>

int main()
{
    int count = 4;
    float sum = 0.0;
    float avg = 0.0;
    float scoreArr[4];
    
    for(int i=0; i<count; i++)
    {
        printf("Enter %d score: ", i+1);
        scanf("%f", &scoreArr[i]);
        sum += scoreArr[i];
    }
    
    avg = sum / count;

    printf("Total points: %f \n", sum);
    printf("Average scores: %f \n", avg);
    
    if(avg>=90)
    {
        printf("A");
    }
    else if(80<= avg && avg <90)
    {
        printf("B");
    }
    else if(70<= avg && avg <79)
    {
        printf("C");
    }
    else if(60<= avg && avg <69)
    {
        printf("D");
    }
    else
    {
        printf("F");
    }
}